Question

XO type of sex determination and XY type of sex determination are the examples of ______.

• A. male heterogamety
• B. female heterogamety
• C. male homogamety
• D. both (b) and $\left(c\right)$

Answer 1

Answer: (A)

In females,homogamety is present and in males, heterogamety is present. In homogamety XX gene is present. In the female, both gametes that are obtained will be X. In males, XY is present and XO will also show heterogamety because on gamete formation they give X gamete and O gamete which does not express any sex while X represents male gamete.