Question

Name the type of heterogamety observed in most birds.

Hint:

Include a relevant concept, shortcut, or useful trick related to solving this type of problem. Give useful quick tips for the question. Also properly format the text in quick tip as per latex. \textbf{Quick Tip (a):} Remember that in birds, it's the female that determines the sex of the offspring due to her heterogametic (ZW) nature, unlike in mammals where the male (XY) determines the sex. \textbf{Quick Tip (b):} Understand the terms homogametic (producing gametes with the same sex chromosome) and heterogametic (producing gametes with different sex chromosomes). In birds, males are homogametic (ZZ) and females are heterogametic (ZW). The number of autosomes remains constant in both sexes of a species.

Answer 1

The type of heterogamety observed in most birds is female heterogamety. In this system, females have two different sex chromosomes, designated as ZW, while males have two identical sex chromosomes, designated as ZZ. This is in contrast to the male heterogamety (XY system) found in humans and many other animals. Correct Answer : Female heterogamety (ZW system).