1. Sexuality
"Hamer examined 40 pairs of gay brothers. He examined 22 genetic markers distributed across the X chromosome in order to see if brothers concordant for homosexuality, were also concordant for the markers. He found that the chromosomal region of xq28, at the tip of the long arm of the X chromosome, 33 of the 40 pairs of brothers shared all the markers. This was statistically different from the expected rate (20 out of 40) suggesting that the gene influencing male sexual orientation, lies within that chromosomal region" In this study, Hamer along with many other fellow geneticists, is claiming t...
- Word Count: 1993
- Approx Pages: 8
- Grade Level: Undergraduate