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The Most Widely Publicized Gender Problem In Human Genetics, William D. Stansfield, Matthew A. Carlton
The Most Widely Publicized Gender Problem In Human Genetics, William D. Stansfield, Matthew A. Carlton
Biological Sciences
In two-child families containing at least one boy, the expected probability that such a family has two boys is 1/3, provided that the boy/girl (B/G) ratio is 1.0 and the population to which they belong has a binomial distribution of BB, (BG + GB), and GG families. It is commonly known that in most human populations the sex ratio at birth (i.e., the ratio of the number of boys to the number of girls) is greater than 1.0. Teachers and textbook writers seldom discuss the more realistic expected distributions in populations where the sex ratio is greater than 1.0. We …