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Posted by / 09-Nov-2020 16:56

Sex chat of a boy with girl inalayalam

The work by Corry Gellatly, a research scientist at the university, has shown that men inherit a tendency to have more sons or more daughters from their parents.

In contrast, men with more daughters may have lost their only sons in the war and those sons would have been more likely to father girls.

In his paper, Mr Gellatly demonstrates that it is likely men carry two different types of allele, which results in three possible combinations in a gene that controls the ratio of X and Y sperm; -- Men with the first combination, known as mm, produce more Y sperm and have more sons.

-- The second, known as mf, produce a roughly equal number of X and Y sperm and have an approximately equal number of sons and daughters.

In the second tree (B) the grandfather is ff, so all his children are female, they have the ff combination of alleles because their father and mother were both ff.

One of the female children has her own children with a male who has the mm combination of alleles.

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This would explain why the men that survived the war were more likely to have male children, which resulted in the boy-baby boom.

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