What is a sex chromosome ?

What is a sex chromosome ?
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Chromosomes other than autosomes that help determine the sex of an organism are called allozomes or sex-chromosomes.
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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.

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

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

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.

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 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

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

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

. 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

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

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