Select the incorrect pair

Delete the odd one:

Heterogametic male condition does not occur in

Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female.

Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.

Which one of the following conditions correctly describes the manner of determining the sex?

Bird females have chromosome arrangement as