What determines the sex of a child in a person: from the chromosomes of the egg or the chromosomes of the sperm?

| July 7, 2021 | education

1. What determines the sex of a child in a person: from the chromosomes of the egg or the chromosomes of the sperm? 2. How many autosomes does Drosophila have? in a person? 3. What signs are called sex-linked?

1. The maternal organism will always give the same type of gametes – X, that is, carry the female sex chromosome. In men, the set includes a female and a male chromosome, and depending on which of them the sperm will carry – X or Y, the sex of the child is determined. If Y, then the child’s set will be XY and this is a boy. If X, then the child’s set will be XX and this is a girl.

2. Drosophila has 3 pairs of autosomes, while humans have 22.

3. Those that will be inherited only through the sex chromosomes, that is, together with the sex. For example, hemophilia.



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