Question

In man, which of the following genotypes and
phenotypes may be the correct result of
aneuploidy in sex chromosomes
(a) 22 pairs + XXY males
(b) 22 pairs + XX females
(c) 22 pairs + XXXY females
(d) 22 pairs + Y females

Answer 1

In man, 22 pairs + XXY males  genotypes and  phenotypes may be the correct result of  aneuploidy in sex chromosomes

.  

• Option (a) is correct.
• Aneuploidy is a state/condition in which chromosomal change occurs due to an increase or decrease in the number of a single chromosomes.
• A man has 22 pairs of autosomes and XY sex chromosomes.  
• The presence of one extra X chromosome represents the aneuploid human male.

Answer 2

In man, 22 pairs + XXY males is the correct result of  aneuploidy in sex chromosomes.

Option (A) is correct.

Explanation:

• When a change in the number of chromosomes takes place by adding or deleting the set of chromosomes this process is known as aneuploidy.

• There are 22 pairs of autosomes and XY set of chromosomes in human male organisms.

• If there is one chromosome extra then it showa the presence of aneuploid in human male organism.

• In man, 22 pairs + XXY males is the correct result of  aneuploidy in sex chromosomes.

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What is genotype and phenotype?

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