Some females have only one X chromosome, and their genotype is expressed as XO. There are living males with the genotype XXY and XYY, but none with genotype YO. What explains this difference?

Question

Biology

Jared Kelly

22 July, 23:44

Some females have only one X chromosome, and their genotype is expressed as XO. There are living males with the genotype XXY and XYY, but none with genotype YO. What explains this difference?

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Answers (1)

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Ayaan Charles · Answer 1

The answer is given below:

Explanation:

Most of the gender specific abnormalities which are related to chromosomes are due to sex chromosomes. As a rule in general males receives or inherit an X chromosome from his mother and a Y chromosome from his father, so males have XY - sex chromosomes. Females have XX-chromosomes, they inherit one X chromosome from mother and one X chromosome from father. One Y chromosome is enough to produce maleness and in absence of Y chromosome, it is necessary for femaleness.

Sex chromosome abnormalities in females appear as a result of change in the number of X chromosomes. In male abnormalities are due to change in the numbers of either the X or the Y chromosome or both.