Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid cells are formed at the end of meiosis-I ( C

Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid cells are formed at the end of meiosis-I ( C
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Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid ... and C C. Only B D. All are correct
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Assertion : Primary spermatocytes of testes are haploid . Reason : Primary spermatocytes are formed by meiosis I in the spermatogonia .

Description : Assertion : Primary spermatocytes of testes are haploid . Reason : Primary spermatocytes are formed by meiosis I in the spermatogonia .

Last Answer : Assertion : Primary spermatocytes of testes are haploid . Reason : Primary spermatocytes are formed by ... . If both Assertion & Reason are False.

Unlike mitosis, meiosis results in the formation of a. diploid cells. b. haploid cells. c. 2N daughter cells. d. body cells.

Description : Unlike mitosis, meiosis results in the formation of a. diploid cells. b. haploid cells. c. 2N daughter cells. d. body cells.

Last Answer : b. haploid cells.

In which phase of cell cycle the amout of DNA in a diploid cell become four times as compared to a haploid cell?

Description : In which phase of cell cycle the amout of DNA in a diploid cell become four times as compared to a haploid cell?

Last Answer : In which phase of cell cycle the amout of DNA in a diploid cell become four times as compared to a haploid cell? A. ` ... C. `G_(2)`, S & M D. `G_(@)`

Assertion : Replication of DNA not occurs during interkinesis. Reason : Divison of chromosomes takes place during meiosis-II.

Description : Assertion : Replication of DNA not occurs during interkinesis. Reason : Divison of chromosomes takes place during meiosis-II.

Last Answer : Assertion : Replication of DNA not occurs during interkinesis. Reason : Divison of chromosomes takes place ... . If both Assertion & Reason are false.

During meiosis how cycles of nucleus division, DNA replication and division of centromere take place respectively :-

Description : During meiosis how cycles of nucleus division, DNA replication and division of centromere take place respectively :-

Last Answer : During meiosis how cycles of nucleus division, DNA replication and division of centromere take place respectively :- ... , Two, One D. Two, One, One

DNA contains some palindromic sequences which (A) Mark the site for the formation of replication forks (B) Direct DNA polymerase to turn back to replicate the other strand (C) Are recognized by restriction enzymes (D) Are found only in bacterial DNA

Description : DNA contains some palindromic sequences which (A) Mark the site for the formation of replication forks (B) Direct DNA polymerase to turn back to replicate the other strand (C) Are recognized by restriction enzymes (D) Are found only in bacterial DNA

Last Answer : Answer : C

How many daughter cells are formed in one cycle of meiosis?

Description : How many daughter cells are formed in one cycle of meiosis?

Last Answer : Ans. Four

Does it mean that meiosis never occur if the organism is haploid? -Biology

Description : Does it mean that meiosis never occur if the organism is haploid? -Biology

Last Answer : answer:

In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores

Description : In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores

Last Answer : Ans. ((d))

Multiple checkpoints in the eukaryotic cell cycle ensure that division occurs only after sufficient growth and faithful DNA replication, and only when favorable conditions exist. Of the many proteins involved in cell cycle control, cyclin-dependent kinases (CDKs) are among the most important. How do CDKs function to control the cell cycle?

Description : Multiple checkpoints in the eukaryotic cell cycle ensure that division occurs only after sufficient growth and faithful DNA replication, and only when favorable conditions exist. Of the many proteins involved in ... CDKs) are among the most important. How do CDKs function to control the cell cycle?

Last Answer : CDKs phosphorylate various protein substrates that are required for cell cycle progression. Some of the important substrate proteins that CDKs phosphorylate include condensin proteins, which are essential ... which form a stabilizing network under the nuclear membrane that assembles during mitosis.

$ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during S phase.

Description : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during S phase.

Last Answer : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during ... , R is wrong D. If both As and R are wrong.

Satellite DNA is important because it (a) does not code for proteins and is same in all members of the population (b) codes for enzymes needed for DNA replication (c) codes for proteins needed in cell cycle (d) shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children.

Description : Satellite DNA is important because it (a) does not code for proteins and is same in all members of the population (b) codes for enzymes needed for DNA replication (c) codes for proteins ... and also the same degree of polymorphism in an individual, which is heritable from parents to children.

Last Answer : (d) shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children

In which stage of cell cycle, DNA replication occurs? (a) G1-phase (b) S-phase (c) G2-phase (d) M-phase

Description : In which stage of cell cycle, DNA replication occurs? (a) G1-phase (b) S-phase (c) G2-phase (d) M-phase

Last Answer : (b) S-phase

In the somatic cell cycle (a) in G1 phase DNA content is double the amount of DNA present in the original cell (b) DNA replication takes place in S phase (c) a short interphase is followed by a long mitotic phase (d) G2 phase follows mitotic phase.

Description : In the somatic cell cycle (a) in G1 phase DNA content is double the amount of DNA present in the original cell (b) DNA replication takes place in S phase (c) a short interphase is followed by a long mitotic phase (d) G2 phase follows mitotic phase.

Last Answer : (b) DNA replication takes place in S phase

What mode of cell division sperm cells to be formed in the haploid male bee?

Description : What mode of cell division sperm cells to be formed in the haploid male bee?

Last Answer : Need answer

Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of carbohydrates, fats and proteins. (c) Enzymes of electron transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Description : Which of the following statements regarding mitochondria is incorrect? (a) Mitochondrial matrix contains single circular DNA molecule and ribosomes. (b) Outer membrane is permeable to monomers of ... transport are embedded in outer membrane. (d) Inner membrane is convoluted with infoldings.

Last Answer : (c) Enzymes of electron transport are embedded in outer membrane.

Which one of the following statements is NOT true of the bacterial chromosome? a. It Is Located In The Nucleoid. b. It Usually Isa Single, Circular Molecule. c. Some Genes Are Dominant To Others. d. It Usually Is Haploid.

Description : Which one of the following statements is NOT true of the bacterial chromosome? a. It Is Located In The Nucleoid. b. It Usually Isa Single, Circular Molecule. c. Some Genes Are Dominant To Others. d. It Usually Is Haploid.

Last Answer : c. Some Genes Are Dominant To Others.

$ The enzymes which joins short pieces DNA in the laggins strand is called ligase. ! Lagging strand and leading strand are formed due to replication f

Description : $ The enzymes which joins short pieces DNA in the laggins strand is called ligase. ! Lagging strand and leading strand are formed due to replication f

Last Answer : $ The enzymes which joins short pieces DNA in the laggins strand is called ligase. ! Lagging strand and ... wrong D. If both As and R are wrong.

Neurospora is used as genetic material because (a) It has short life cycle of 10 days (b) The product of single meiosis can be easily analysed (c) Meiotic products are linearly arranged in the form of ordered tetrads (d) Is a diploid fungus

Description : Neurospora is used as genetic material because (a) It has short life cycle of 10 days (b) The product of single meiosis can be easily analysed (c) Meiotic products are linearly arranged in the form of ordered tetrads (d) Is a diploid fungus

Last Answer : Ans:(a)

Plasmid has been used as vector because (a) it is circular DNA which have capacity to join to eukaryotic DNA (b) it can move between prokaryotic and eukaryotic cells (c) both ends show replication (d) it has antibiotic resistance gene.

Description : Plasmid has been used as vector because (a) it is circular DNA which have capacity to join to eukaryotic DNA (b) it can move between prokaryotic and eukaryotic cells (c) both ends show replication (d) it has antibiotic resistance gene.

Last Answer : (a) it is circular DNA which have capacity to join to eukaryotic DNA

Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) Replication completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs

Description : Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) ... completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs

Last Answer : (d) Palindromic sequence of base pairs

Mark the incorrect option a) Single account can be converted into Joint and Vice versa b) Minor after attaining majority has to apply for conversion of the account in his name c) If minor attaining majority the account can be closed by guardian d) None of these

Description : Mark the incorrect option a) Single account can be converted into Joint and Vice versa b) Minor after attaining majority has to apply for conversion of the account in his name c) If minor attaining majority the account can be closed by guardian d) None of these

Last Answer : c) If minor attaining majority the account can be closed by guardian

Which one of the following statements concerning the accounting cycle is incorrect? a. The accounting cycle includes journalizing transactions and posting to ledger accounts. b. The accounting cycle includes only one optional step. c. The steps in the accounting cycle are performed in sequence. d. The steps in the accounting cycle are repeated in each accounting period.

Description : Which one of the following statements concerning the accounting cycle is incorrect? a. The accounting cycle includes journalizing transactions and posting to ledger accounts. b. The accounting cycle includes ... sequence. d. The steps in the accounting cycle are repeated in each accounting period.

Last Answer : b. The accounting cycle includes only one optional step.

Meiosis involves

Description : Meiosis involves

Last Answer : Meiosis involves A. one nuclear divisions and one chromosome division B. two nuclear divisions ... two nuclear civisions and two chromosome divisions

Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement. (a) The enzyme recognises a specific palindromic nucleotide sequence in the DNA. (b) The enzyme cuts DNA molecule at identified position within the DNA. (c) The enzyme binds DNA at specific sites and cuts only one of the two strands. (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

Description : Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement. (a) The enzyme recognises a specific palindromic nucleotide sequence in the DNA. (b) ... (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.

Last Answer : (c) The enzyme binds DNA at specific sites and cuts only one of the two strands.

Assertion : Meiosis produces four genetically dissimilar cells. Reason : Crossing over or gene exchange takes place in meiosis.

Description : Assertion : Meiosis produces four genetically dissimilar cells. Reason : Crossing over or gene exchange takes place in meiosis.

Last Answer : Assertion : Meiosis produces four genetically dissimilar cells. Reason : Crossing over or gene exchange ... . If both Assertion & Reason are false.

What term is illustrated by plants that have a sporic life cycle in which both haploid and diploid forms are multicelluar?

Description : What term is illustrated by plants that have a sporic life cycle in which both haploid and diploid forms are multicelluar?

Last Answer : I cannot answer this question.

A plant having two types of haploid structures in its life cycle is known as: (a) Haplobiontic (b) Diplobiontic (c) Haplontic (d) Diplontic

Description : A plant having two types of haploid structures in its life cycle is known as: (a) Haplobiontic (b) Diplobiontic (c) Haplontic (d) Diplontic

Last Answer : Ans. ((a))

The dominant phase of life cycle in these organism is haploid? A. Mosses (Answer) B. Bacteria C. Protozoa D. None

Description : The dominant phase of life cycle in these organism is haploid? A. Mosses (Answer) B. Bacteria C. Protozoa D. None

Last Answer : A. Mosses (Answer)

Which one of the following statements about the particular entity is true ? (a) Centromere is found in animal cells, which produces aster during cell division. (b) The gene for producing insulin is present in every body cell. (c) Nucleosome is formed of nucleotides. (d) DNA consists of core of eight histones.

Description : Which one of the following statements about the particular entity is true ? (a) Centromere is found in animal cells, which produces aster during cell division. (b) The gene for producing insulin is ... cell. (c) Nucleosome is formed of nucleotides. (d) DNA consists of core of eight histones.

Last Answer : (b) The gene for producing insulin is present in every body cell.

Which one of the following statements concerning glucose-6-phosphate dehydrogenase deficiency is correct? (A) Young R.B.Cs, particularly reticulocytes, contain the highest enzyme activity cells show less enzyme activity (B) Glucose-6-P Dehydroglucose deficiency leads to disfuction of many tissues (C) G-6-p Dehydroglucose deficiency is due to a single deletion of a large sequence of DNA in the G-6-PD gene (D) G-6-PD deficiency is precipitated by ingestion of drugs such as aspirin

Description : Which one of the following statements concerning glucose-6-phosphate dehydrogenase deficiency is correct? (A) Young R.B.Cs, particularly reticulocytes, contain the highest enzyme activity cells show less enzyme ... PD gene (D) G-6-PD deficiency is precipitated by ingestion of drugs such as aspirin

Last Answer : Answer : A

A bacterial colony containing DNA made up of 100% N15 nitrogen bases is allowed to replicate in a medium containing N14 bases. After one round of replication the result would be a) All individuals will be identical to parents b) All individuals will be hybrids c) Only 50% individuals would be hybrids d) All individuals would have DNA made up of 100% N14

Description : A bacterial colony containing DNA made up of 100% N15 nitrogen bases is allowed to replicate in a medium containing N14 bases. After one round of replication the result would be a) All individuals ... Only 50% individuals would be hybrids d) All individuals would have DNA made up of 100% N14

Last Answer : b) All individuals will be hybrids

Which one of the following statements is incorrect about menstruation? (a) At menopause in the female, there is especially abrupt increase in gonadotropic hormones. (b) The beginning of the cycle of menstruation is called menarche. (c) During normal menstruation about 40 mL blood is lost. (d) The menstrual fluid can easily clot.

Description : Which one of the following statements is incorrect about menstruation? (a) At menopause in the female, there is especially abrupt increase in gonadotropic hormones. (b) The beginning of the cycle of ... normal menstruation about 40 mL blood is lost. (d) The menstrual fluid can easily clot.

Last Answer : (d) The menstrual fluid can easily clot.

Which of these statements is incorrect? (a) Enzymes of TCA cycle are present in mitochondrial matrix. (b) Glycolysis occurs in cytosol. (c) Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms. (d) Oxidative phosphorylation takes place in outer mitochondrial membrane

Description : Which of these statements is incorrect? (a) Enzymes of TCA cycle are present in mitochondrial matrix. (b) Glycolysis occurs in cytosol. (c) Glycolysis operates as long as it is supplied ... that can pick up hydrogen atoms. (d) Oxidative phosphorylation takes place in outer mitochondrial membrane

Last Answer : (d) Oxidative phosphorylation takes place in outer mitochondrial membrane

Which of these statements is incorrect ? (1) Enzymes of TCA cycle are present in mitochondrial matrix. (2) Glycolysis occurs in cytosol. (3) Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms. (4) Oxidative phosphorylation takes place in outer mitochondrial membrane.

Description : Which of these statements is incorrect ? (1) Enzymes of TCA cycle are present in mitochondrial matrix. (2) Glycolysis occurs in cytosol. (3) Glycolysis operates as long as it is supplied ... that can pick up hydrogen atoms. (4) Oxidative phosphorylation takes place in outer mitochondrial membrane.

Last Answer : (4) Oxidative phosphorylation takes place in outer mitochondrial membrane.

Which of the following statements concerning platelets is INCORRECT. Platelets: a) contain DNA b) are roughly disk-shaped c) have little ability to synthesize proteins d) are between 1/2 and 1/3 the diameter of the red cell

Description : Which of the following statements concerning platelets is INCORRECT. Platelets: a) contain DNA b) are roughly disk-shaped c) have little ability to synthesize proteins d) are between 1/2 and 1/3 the diameter of the red cell

Last Answer : ANSWER: A -- contain DNA

Which one of the following statements is correct? (a) Endothecium produces the microspores. (b) Tapetum nourishes the developing pollen. (c) Hard outer layer of pollen is called intine. (d) Sporogenous tissue is haploid

Description : Which one of the following statements is correct? (a) Endothecium produces the microspores. (b) Tapetum nourishes the developing pollen. (c) Hard outer layer of pollen is called intine. (d) Sporogenous tissue is haploid

Last Answer : (b) Tapetum nourishes the developing pollen.

Which one of the following statements is correct?a)Endothecium produces the microspores b)Tapetum nourishes the developing pollenc)Hard outer layer of pollen is called intined)Sporogenous tissue is haploid

Description : Which one of the following statements is correct?a)Endothecium produces the microspores b)Tapetum nourishes the developing pollenc)Hard outer layer of pollen is called intined)Sporogenous tissue is haploid

Last Answer : Tapetum nourishes the developing pollen

True statements about the nucleic acid include: a. contains purine and pyrimidine which are bound together by covalent bonds b. there is always an equal concentration of purine and pyrimidine c. in RNA, thymine is replaced by uracil d. introns is more common than exons on the DNA e. the histones mark the excision site

Description : True statements about the nucleic acid include: a. contains purine and pyrimidine which are bound together by covalent bonds b. there is always an equal concentration of purine and pyrimidine c. in RNA, ... d. introns is more common than exons on the DNA e. the histones mark the excision site

Last Answer : there is always an equal concentration of purine and pyrimidine

Are mitosis parent cells diploid or haploid?

Description : Are mitosis parent cells diploid or haploid?

Last Answer : diploid

What process produces diploid cells from haploid cells?

Description : What process produces diploid cells from haploid cells?

Last Answer : Meiosis produces haploid cells from a diploid cell

Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Description : Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Last Answer : Ans. ((c))

What are haploid cells?

Description : What are haploid cells?

Last Answer :  A cell that contains a single set of chromosomes is called haploid cell   The term haploid can also refer to the number of chromosomes in egg or sperm cells

Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus

Description : Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus

Last Answer : (b) Antipodal cells and egg cell

Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Description : Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Last Answer : d) Egg cell and antipodal cells

What are haploid cells?

Description : What are haploid cells?

Last Answer : When an organism forms gametes (sperms or eggs) by meiosis, the number of chromosomes is reduced to half in the gametes, is called haploid cell.

Somatic cells of a human have ____ chromosomes and are called (A) 10, haploid (B) 92, diploid (C) 23, haploid (D) 46, diploid

Description : Somatic cells of a human have ____ chromosomes and are called (A) 10, haploid (B) 92, diploid (C) 23, haploid (D) 46, diploid

Last Answer : (D) 46, diploid

Organisms with cells containing two sets of parental chromosomes are called: a) diploid b) bisomal c) haploid d) autosomal

Description : Organisms with cells containing two sets of parental chromosomes are called: a) diploid b) bisomal c) haploid d) autosomal

Last Answer : ANSWER: A -- DIPLOID

Mark the incorrect option a) Not more than one policy will be allowed for one child. The policy can be taken by insured for his/her own child only b) Not more than two children in a family shall be covered under this policy. The same child should not be covered under more than one policy c) The insured of main policy shall not be aged 45 years and above at the time of taking of children policy d) The age of the child note more than 18 year at the time of issue of children policy

Description : Mark the incorrect option a) Not more than one policy will be allowed for one child. The policy can be taken by insured for his/her own child only b) Not more than two children in a family shall be ... policy d) The age of the child note more than 18 year at the time of issue of children policy

Last Answer : d) The age of the child note more than 18 year at the time of issue of children pol