$ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes.

$ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes.
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$ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes. A. If both ... wrong D. If both As and R are wrong.
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The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Description : The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Last Answer : (b) genes for characters are located on the sex- chromosomes

In Drosophila, the sex is determined by (a) the ratio of number of X-chromosome to the sets of autosomes (b) X and Y chromosomes (c) the ratio of pairs of X-chromosomes to the pairs of autosomes (d) whether the egg is fertilized or develops parthenogenetically.

Description : In Drosophila, the sex is determined by (a) the ratio of number of X-chromosome to the sets of autosomes (b) X and Y chromosomes (c) the ratio of pairs of X-chromosomes to the pairs of autosomes (d) whether the egg is fertilized or develops parthenogenetically.

Last Answer : (c) the ratio of pairs of X-chromosomes to the pairs of autosomes

If Mendel had studied the seven traits using a plant with 12 chromosomes instead of 14, in what way would his interpretation have been different? (a) He would not have discovered the law of independent assortment. (b) He would have discovered sex linkage. (c) He could have mapped the chromosome. (d) He would have discovered blending or incomplete dominance.

Description : If Mendel had studied the seven traits using a plant with 12 chromosomes instead of 14, in what way would his interpretation have been different? (a) He would not have discovered the law of ... c) He could have mapped the chromosome. (d) He would have discovered blending or incomplete dominance.

Last Answer : He would not have discovered the law of

Pick out the person associated with the coining of the term ‘gene’. (1) Waldeyer (2) Mendel (3) Johannsen (4) Morgan

Description : Pick out the person associated with the coining of the term ‘gene’. (1) Waldeyer (2) Mendel (3) Johannsen (4) Morgan

Last Answer : Johannsen

$ Sicke cell anaemia is a type of pleiotropy. ! Sex linked inharitance is also called criss cross inheritance.

Description : $ Sicke cell anaemia is a type of pleiotropy. ! Sex linked inharitance is also called criss cross inheritance.

Last Answer : $ Sicke cell anaemia is a type of pleiotropy. ! Sex linked inharitance is also called criss cross inheritance ... wrong D. If both As and R are wrong.

Diesel engine was discovered by------? A. Paul Muller B. Faraday C. Waldeyer D. Rudolf Diesel (Answer)

Description : Diesel engine was discovered by------? A. Paul Muller B. Faraday C. Waldeyer D. Rudolf Diesel (Answer)

Last Answer : D. Rudolf Diesel (Answer)

$ In prokaryotes, there is present a ring shaped chromosome. ! The ring shaped chromosome is called Eukaryotic Nucleus.

Description : $ In prokaryotes, there is present a ring shaped chromosome. ! The ring shaped chromosome is called Eukaryotic Nucleus.

Last Answer : $ In prokaryotes, there is present a ring shaped chromosome. ! The ring shaped chromosome is called Eukaryotic ... D. If both As and R are wrong.

$ The two strands of a chromosome are called sister chromatids ! The two sister chromatids get separated during Anaphase.

Description : $ The two strands of a chromosome are called sister chromatids ! The two sister chromatids get separated during Anaphase.

Last Answer : $ The two strands of a chromosome are called sister chromatids ! The two sister chromatids get separated during ... D. If both As and R are wrong.

What is a sex chromosome? -Biology

Description : What is a sex chromosome? -Biology

Last Answer : Sex chromosome is a chromosome that operates in the sex-determining mechanism of a species. Many animals have two different types of sex chromosomes. For example, in human there is a large X chromosome and a much smaller Y chromosome.

Sex determination of child is done by whose chromosome? -General Knowledge

Description : Sex determination of child is done by whose chromosome? -General Knowledge

Last Answer : The answer is 'Father'

Sex determination of child is done by whose chromosome? -General Knowledge

Description : Sex determination of child is done by whose chromosome? -General Knowledge

Last Answer : answer:

Sex determination of child is done by whose chromosome? -General Knowledge

Description : Sex determination of child is done by whose chromosome? -General Knowledge

Last Answer : answer:

What is a sex chromosome ?

Description : What is a sex chromosome ?

Last Answer : The chromosome by which the sex of an organism is determined is called sex chromosome.

What is a sex chromosome ?

Description : What is a sex chromosome ?

Last Answer : Chromosomes other than autosomes that help determine the sex of an organism are called allozomes or sex-chromosomes.

XX-XO sex chromosome complement occurs in

Description : XX-XO sex chromosome complement occurs in

Last Answer : XX-XO sex chromosome complement occurs in A. Cockrocach B. Hony bee C. Chimpanzee D. Human female

How can a person have a sex chromosome that differs from their external appearance?

Description : How can a person have a sex chromosome that differs from their external appearance?

Last Answer : 1) Mosaics (more than one set of genes in one body).2) Any type of hormone error that produces hormones that don'twork right.

In humans have a larger sex chromosome?

Description : In humans have a larger sex chromosome?

Last Answer : Feel Free to Answer

What ia the difference between an autosome and a sex chromosome?

Description : What ia the difference between an autosome and a sex chromosome?

Last Answer : An autosome is a gene that determines what a species looks like no mater the sex. The sex chromosome has genes on it that determines sex and the characterics that go with that sex.

The genes, which remain confined to differential region of ‘Y’ chromosome, are: (a) Autosomal genes (b) Holandric genes (c) Sex linked genes (d) Mutant genes

Description : The genes, which remain confined to differential region of ‘Y’ chromosome, are: (a) Autosomal genes (b) Holandric genes (c) Sex linked genes (d) Mutant genes

Last Answer : Ans. ((b))

The genes, which remain confined to differential region of Y-chromosome, are (a) autosomal genes (b) holandric genes (c) completely sex-linked genes (d) mutant genes.

Description : The genes, which remain confined to differential region of Y-chromosome, are (a) autosomal genes (b) holandric genes (c) completely sex-linked genes (d) mutant genes.

Last Answer : b) holandric genes

.In Drosophila, the XXY condition leads to femaleness whereas in human beings the same condition leads to Klinefelter’s syndrome in male. It proves (a) in human beings Y chromosome is active in sex determination (b) Y chromosome is active in sex determination in both human beings and Drosophila (c) in Drosophila Y chromosome decides femaleness (d) Y chromosome of man have genes for syndrome.

Description : .In Drosophila, the XXY condition leads to femaleness whereas in human beings the same condition leads to Klinefelter's syndrome in male. It proves (a) in human beings Y chromosome is active in ... (c) in Drosophila Y chromosome decides femaleness (d) Y chromosome of man have genes for syndrome.

Last Answer : (a) in human beings Y chromosome is active in sex determination

Genetic identity of a human male is determined by (a) sex-chromosome (b) cell organelles (c) autosome (d) nucleolus.

Description : Genetic identity of a human male is determined by (a) sex-chromosome (b) cell organelles (c) autosome (d) nucleolus.

Last Answer : a) sex-chromosome

. Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Description : . Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

Last Answer : (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.

A fruit fly is heterozygous for sex-linked genes, when mated with normal female fruit fly, the males specific chromosome will enter egg cell in the proportion (a) 3 : 1 (b) 7 : 1 (c) 1 : 1 (d) 2 : 1.

Description : A fruit fly is heterozygous for sex-linked genes, when mated with normal female fruit fly, the males specific chromosome will enter egg cell in the proportion (a) 3 : 1 (b) 7 : 1 (c) 1 : 1 (d) 2 : 1.

Last Answer : (c) 1 : 1

Sex determination of child is done by whose chromosome?

Description : Sex determination of child is done by whose chromosome?

Last Answer : Father

Sex chromosome of a female bird are represented by

Description : 3. Sex chromosome of a female bird are represented by (a ) XO (b)ZW (c)XY (d)ZZ

Last Answer : (b)ZW

1. Sex determination of child is done by whose chromosome? 2. Who is authorised to decide over a dispute regarding disqualification of a member of Parliament? 3. Who firstly demonstrated experimentally the existence of electromagnetic wave? 4. Which is not essentially a species of the Himalayan vegetation? 5. What are the main channels of our knowledge about the Indus Valley Civilization?

Description : 1. Sex determination of child is done by whose chromosome? 2. Who is authorised to decide over a dispute regarding disqualification of a member of Parliament? 3. Who firstly demonstrated ... of bargets, coasters and dredgers? 20. In which country was Buddhism first propogated outside India?

Last Answer : Answer : 1. Father 2. President 3. Hertz 4. Mahogany 5. Archaeological excavations 6. December 20 7. International Year of Volunteers 8. Increase growth in lenght 9. Tropical moist deciduous ... . Boxing 17. Herbert Spencer 18. During a Financial Emergency 19. Garden Reach Shipyard 20. Srilanka

Assertion :- In anaphase number of chromosomes get doubled. Durring anaphase each chromosome split simultaneously and two daughter chromatids now refe

Description : Assertion :- In anaphase number of chromosomes get doubled. Durring anaphase each chromosome split simultaneously and two daughter chromatids now refe

Last Answer : Assertion :- In anaphase number of chromosomes get doubled. Durring anaphase each chromosome split ... If both Assertion & Reason are false.

A cell examined during prophase of cell cycle contained 100 units of DNA and 50 chromosomes. What would be the number of DNA and chromosome in anaphas

Description : A cell examined during prophase of cell cycle contained 100 units of DNA and 50 chromosomes. What would be the number of DNA and chromosome in anaphas

Last Answer : A cell examined during prophase of cell cycle contained 100 units of DNA and 50 chromosomes. What ... & 100 chromosomes D. 50 DNA & 25 chromosomes

How do Sutton and observations about chromosomes number support the chromosome theory of inheritance?

Description : How do Sutton and observations about chromosomes number support the chromosome theory of inheritance?

Last Answer : Need answer

Mitosis is a type of cell division in which - (1) The chromosomes maintain their original number (2) The chromosome number is reduced to half (3) The Chromosome number is doubled (4) The chromosome number is reduced to one fourth

Description : Mitosis is a type of cell division in which - (1) The chromosomes maintain their original number (2) The chromosome number is reduced to half (3) The Chromosome number is doubled (4) The chromosome number is reduced to one fourth

Last Answer : (3) The Chromosome number is doubled

Regarding the human chromosomesa. there are 23 pairs autosomal chromosomes b. the Y chromosome is larger than the X chromosome c. cells containing YO chromosome are not compatible with life d. Barr body is caused by the presence of an inactive X chromosome

Description : Regarding the human chromosomes a. there are 23 pairs autosomal chromosomes b. the Y chromosome is larger than the X chromosome c. cells containing YO chromosome are not compatible with life d. Barr body is caused by the presence of an inactive X chromosome

Last Answer : cells containing YO chromosome are not compatible with life

True statements about chromosome include: a. 23 chromosomes are found in germinal cells b. in female only one chromosome is activated c. the Barr body is due to inactivated X chromosome e. all above

Description : True statements about chromosome include: a. 23 chromosomes are found in germinal cells b. in female only one chromosome is activated c. the Barr body is due to inactivated X chromosome e. all above

Last Answer : all above

.Of a normal couple, half the sons are haemophiliac while half the daughters are carriers. The gene is located on (a) X-chromosome of father (b) Y-chromosome of father (c) one X-chromosome of mother (d) both the X-chromosomes of mother

Description : .Of a normal couple, half the sons are haemophiliac while half the daughters are carriers. The gene is located on (a) X-chromosome of father (b) Y-chromosome of father (c) one X-chromosome of mother (d) both the X-chromosomes of mother

Last Answer : (c) one X-chromosome of mother

A woman with 47 chromosomes due to three copies of chromosome 21 is characterised by (a) superfemaleness (b) triploidy (c) Turner’s syndrome (d) Down’s syndrome.

Description : A woman with 47 chromosomes due to three copies of chromosome 21 is characterised by (a) superfemaleness (b) triploidy (c) Turner’s syndrome (d) Down’s syndrome.

Last Answer : (d) Down’s syndrome.

.Down’s syndrome in humans is due to (a) three ‘X’ chromosomes (b) three copies of chromosome 21 (c) monosomy (d) two ‘Y’ chromosomes.

Description : .Down’s syndrome in humans is due to (a) three ‘X’ chromosomes (b) three copies of chromosome 21 (c) monosomy (d) two ‘Y’ chromosomes.

Last Answer : b) three copies of chromosome 21

.A human female with Turner’s syndrome (a) has 45 chromosomes with XO (b) has one additional X chromosome (c) exhibits male characters (d) is able to produce children with normal husband.

Description : .A human female with Turner’s syndrome (a) has 45 chromosomes with XO (b) has one additional X chromosome (c) exhibits male characters (d) is able to produce children with normal husband.

Last Answer : (a) has 45 chromosomes with XO

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by (a) only daughters (b) only sons (c) only grandchildren (d) both sons and daughters

Description : A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by (a) only daughters (b) only sons (c) only grandchildren (d) both sons and daughters

Last Answer : (d) both sons and daughters.

.Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child? (a) Two X chromosomes (b) Only one Y chromosome (c) Only one X chromosome (d) One X and one Y chromosome

Description : .Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child? (a) Two X chromosomes (b) Only one Y chromosome (c) Only one X chromosome (d) One X and one Y chromosome

Last Answer : (a) Two X chromosomes

Independent assortment of genes does not take place when (a) genes are located on homologous chromosomes (b) genes are linked and located on same chromosome (c) genes are located on non-homogenous chromosome (d) all of these.

Description : Independent assortment of genes does not take place when (a) genes are located on homologous chromosomes (b) genes are linked and located on same chromosome (c) genes are located on non-homogenous chromosome (d) all of these.

Last Answer : genes are linked and located on same chromosome

In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates (a) the two genes are linked and present on the same chromosome (b) both of the characters are controlled by more than one gene (c) the two genes are located on two different chromosomes (d) chromosomes failed to separate during meiosis.

Description : In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates (a) the two genes are linked and present on the ... two genes are located on two different chromosomes (d) chromosomes failed to separate during meiosis.

Last Answer : (a) the two genes are linked and present on the same chromosome

Multiple alleles are present (a) at the same locus of the chromosome (b) on non-sister chromatids (c) on different chromosomes (d) at different loci on the same chromosome

Description : Multiple alleles are present (a) at the same locus of the chromosome (b) on non-sister chromatids (c) on different chromosomes (d) at different loci on the same chromosome

Last Answer : (a) at the same locus of the chromosome

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cell. If APC is defective in a human cell, which of the following is expected to occur? (a) Chromosomes will be fragmented. (b) Chromosomes will not segregate. (c) Recombination of chromosome arms will occur. (d) Chromosomes will not condense

Description : Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cell. If APC is defective in a human cell, which of the following is expected to ... will not segregate. (c) Recombination of chromosome arms will occur. (d) Chromosomes will not condense

Last Answer : (b) Chromosomes will not segregate.

.Centromere is required for (a) replication of DNA (b) chromosome segregation (c) poleward movement of chromosomes (d) cytoplasmic cleavage.

Description : .Centromere is required for (a) replication of DNA (b) chromosome segregation (c) poleward movement of chromosomes (d) cytoplasmic cleavage.

Last Answer : (c) poleward movement of chromosomes

Plasmids are a. Another Name for Transposons. b. Accessory Genetic Information. c. Domains within A Chromosome. d. Daughter Chromosomes.

Description : Plasmids are a. Another Name for Transposons. b. Accessory Genetic Information. c. Domains within A Chromosome. d. Daughter Chromosomes.

Last Answer : b. Accessory Genetic Information.

Which of the following statement describes plasmids? A- Another name for a protoplast B- A complex membrane structure that covers the chromosome of bacteria Small, circular DNA molecules that can exist independently of chromosomes commonly C- found in bacteria D- None of the above

Description : Which of the following statement describes plasmids? A- Another name for a protoplast B- A complex membrane structure that covers the chromosome of bacteria Small, circular DNA molecules that can exist independently of chromosomes commonly C- found in bacteria D- None of the above

Last Answer : found in bacteria

Nondisjunction of a chromosome results in which of the following diagnoses? a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two copies of a particular chromosome (nondisjunction) Down syndrome results from three number 21 chromosomes. b) Huntingon Disease Huntington disease is one example of a germ-line mutation. c) Duchenne Muscular Dystrophy Duchenne muscular dystrophy, an inherited form of muscular dystrophy, is an example of a genetic caused by structural gene mutations. d) Marphan Syndrome Marphan Syndrome is a genetic condition that may occur in a single family member as a result of spontaneous mutation.

Description : Nondisjunction of a chromosome results in which of the following diagnoses? a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two ... genetic condition that may occur in a single family member as a result of spontaneous mutation.

Last Answer : a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two copies of a particular chromosome (nondisjunction) Down syndrome results from three number 21 chromosomes.

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur ? (1) Chromosomes will be fragmented (2) Chromosomes will not segregate (3) Recombination of chromosome arms will occur (4) Chromosomes will not condense

Description : Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur ... will not segregate (3) Recombination of chromosome arms will occur (4) Chromosomes will not condense

Last Answer : (2) Chromosomes will not segregate

$ When the total number of chromosomes is not the exact multiple of the haploid number of an organisms, the phenomenon is called euploidy. ! Euploidy

Description : $ When the total number of chromosomes is not the exact multiple of the haploid number of an organisms, the phenomenon is called euploidy. ! Euploidy

Last Answer : $ When the total number of chromosomes is not the exact multiple of the haploid number of an organisms, the ... wrong D. If both As and R are wrong.

$ A chromosomes with equal sized arms is called isobrachial. ! Barr bodies are present in the cells of human females.

Description : $ A chromosomes with equal sized arms is called isobrachial. ! Barr bodies are present in the cells of human females.

Last Answer : $ A chromosomes with equal sized arms is called isobrachial. ! Barr bodies are present in the cells of human ... wrong D. If both As and R are wrong.