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.
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
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.
Description : Which one is the incorrect statement with regard to the importance of pedigree analysis? (a) It confirms that DNA is the carrier of genetic information. (b) It helps to understand whether the trait in ... linked to one of the autosome. (d) It helps to trace the inheritance of a specific trait.
Last Answer : (a) It confirms that DNA is the carrier of genetic information.
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
Description : The cellular organelles called “suicide bags” are (A) Lysosomes (B) Ribosomes (C) Nucleolus (D) Golgi’s bodies
Last Answer : A
Description : Which of the following organelles is called 'Atom bombs'? (1) Microtubules (2) Nucleolus (3) Golgi bodies (4) Lysosome
Last Answer : (4) Lysosome Explanation: Lysosomes are known by names such as suicidal bags/ atom bomb and House keeper / scavenger of cell. They are called suicide bags or atom bombs because if the single membrane surrounding the digestive enzyme breaks, the enzymes released may also destroy the cell itself.
Description : .Which one of the following organelles is located near the nucleus and contains a collection of flattened membrane bound cisternae? (a) Nucleolus (b) Mitochondrion (c) Centriole (d) Golgi apparatus
Last Answer : (d) Golgi apparatus
Description : Which of the following organelles is called ‘Atom bombs’ ? (1) Microtubules (2) Nucleolus (3) Golgi bodies (4) Lysosome
Last Answer : Lysosome
Description : A genetically diseased father (male) marries with a normal female and gives birth to 3 carrier girls and 5 normal sons. It may be which type of genetic disease? (a) Sex-influenced disease (b) Blood group inheritance disease (c) Sex-linked disease (d) Sex-recessive disease
Last Answer : (c) Sex-linked disease
Description : Allosomes are (1) cell organelles (2) plant hormones (3) alleles (4) sex chromosomes
Last Answer : sex chromosomes
Description : Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus
Last Answer : (b) Synapsis
Description : Production of a human protein in bacteria by genetic engineering is possible because (a) the human chromosome can replicate in bacterial cell (b) the mechanism of gene regulation is identical in ... ) bacterial cell can carry out the RNA splicing reactions (d) the genetic code is universal.
Last Answer : (d) the genetic code is universal.
Description : 2. A human cell containing 22 autosomes and a Y chromosome is probably a a) somatic cell of male b) sperm cell c) somatic cell of female d) unfertilized egg cell
Last Answer : b) sperm cell
Description : The number of autosome in human prilmary spermatocyte is :
Last Answer : The number of autosome in human prilmary spermatocyte is : A. 22 B. 23 C. 44 D. 46
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
Description : Down Syndrome, a congenital genetic disorder in human beings, is cased by : (a) a defective recessive gene in homozygous condition (b) an extra x chromosome (c) trisomy of chromosome 18 (d) trisomy of chromosome 21
Last Answer : Ans:(d)
Description : This female American geneticist achieved recognition as one of the world's foremost investigators in cytogenetics, the study of heredity by cellular and genetic methods. In 1951 she discovered that gene ... was awarded the Nobel Prize in medicine in 1983. Who is this notable woman scientist?
Last Answer : ANSWER: (BARBARW) McCLINTOCK
Description : Which of the following organelles is related with genetic engineering? (a) Mitochondria (b) Plasmids (c) Golgi bodies (d) Lysosomes
Last Answer : (b) Plasmids
Description : Explain the mechanism of sex determination in humans. Or With the help of a flow chart explain in brief how the sex of a newborn is genetically determined in human beings. Which of the two parents, the mother or the father, is responsible for determination of sex of a child? -Biology
Last Answer : Mechanism of Sex Determination in Human Beings: In human beings, the sex of the individual is genetically determined.Sex determination is the process by which sex of a new born individual can be ... happens at fertilisation. Thus, father is responsible for the determination of the sex of a child.
Description : How is sex determined in human beings? -Biology
Last Answer : answer:
Description : Sex is determined in human beings (a) by ovum (b) at time of fertilisation (c) 40 days after fertilisation (d) seventh to eight week when genitals differentiate in fetus.
Last Answer : (b) at time of fertilisation
Description : Which of the following human genetic disorders is sex-linked ? (1) Haemophilia (2) Cystic fibrosis (3) Albinism (4) PKU
Last Answer : Haemophilia
Description : An abnormal human male phenotype involving an extra X-chromosome (XXY) is a case of (a) Edward’s syndrome (b) Klinefelter’s syndrome (c) intersex (d) Down’s syndrome.
Last Answer : (b) Klinefelter’s syndrome
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
Description : What is an autosome ?
Last Answer : Every living thing has a certain number of chromosomes. Humans have 23 pairs of chromosomes. Of these, 22 pairs are the same for men and women. These are called autosomes.
Last Answer : An autosome is a type of chromosome that has two replicas (derived from a father and a mother) of the same shape and during mouse cell division along its entire length, embracing each other ( ... (i.e. the two portraits are not identical) which is exemplified by the sex-determining chromosome.
Description : Assertion: Among the primates, chimpanzee is is the closest relative of the present day humans. Reason : The banding pattern in the autosome numbers 3
Last Answer : Assertion: Among the primates, chimpanzee is is the closest relative of the present day humans. ... If both the assertion and reason are false.
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.
Description : Sex determination of child is done by whose chromosome? -General Knowledge
Last Answer : The answer is 'Father'
Description : What is a sex chromosome ?
Last Answer : The chromosome by which the sex of an organism is determined is called sex chromosome.
Last Answer : Chromosomes other than autosomes that help determine the sex of an organism are called allozomes or sex-chromosomes.
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
Description : $ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes.
Last Answer : $ 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.
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.
Description : In humans have a larger sex chromosome?
Last Answer : Feel Free to Answer
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))
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
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
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
Description : Sex determination of child is done by whose chromosome?
Last Answer : Father
Description : 3. Sex chromosome of a female bird are represented by (a ) XO (b)ZW (c)XY (d)ZZ
Last Answer : (b)ZW
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
Description : Assertion : Females not participate in the determination of the sex of baby . Reason : Human male is heterogametic .
Last Answer : Assertion : Females not participate in the determination of the sex of baby . Reason : Human male is ... . D. If both Assertion & Reason are False.
Description : 1. Genetic material in bacterium is a single chromosome made up of circular and coiled _______.
Last Answer : Fill in the blanks. 1. Genetic material in bacterium is a single chromosome made ... cells are known as extrachromosomal selfreplicating DNA.
Description : Genetic chromosome number is
Last Answer : Ans. n
Description : The major genetic constituent of chromosome
Last Answer : Ans. DNA
Description : .Identify the correct order of organisation of genetic material from largest to smallest. (a) Genome, chromosome, gene, nucleotide (b) Chromosome, genome, nucleotide, gene (c) Chromosome, gene, genome, nucleotide (d) Genome, chromosome, nucleotide, gene (
Last Answer : (a) Genome, chromosome, gene, nucleotide