1. The SRY gene in the Y chromosome controls the development of many characteristics of males. What kind of inheritance is this? A. Polygenic inheritance B. Pleiotropy. C. Sex linked recessive inheritance D. One pair of genes showing incomplete dominance E. Codominance. 2. Which of the following human traits are inherited through polygenic inheritance? Presence of widow's peak. Height. Hair color. Freckles. Eye color. 3. Choose all of the possible defective sperm that can be produced by non-disjunction of sex chromosomes in male meiosis? y. xx. yy. xy. 0 A. Presence of widow's peak. B. Height. C. Hair color. D. Freckles. E. Eye color..