Describe the mechanism of sex determination in birds.

$A$ family has five daughters and is expecting a sixth child. What is the probability of it being a boy?

Meta-females (super-females) in Drosophila have which of the following chromosome complements?

Who traced a specific nuclear structure all through spermatogenesis in a few insects and named it $x-$body?

Given below are two statements.
Statement $I$: The queen of honey bee develops by way of parthenogenesis.
Statement $II$: In honey bees,all diploid zygotes develop into males.
In light of the above statements,select the correct answer from the options given below.

The presence of hair on the pinna of the ear in males is known as what?