The average ratio of men and women in the human population is:

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.

Initial clues about the genetic/chromosomal mechanism of sex determination can be traced back to some of the experiments carried out in:

Which scientist designated the chromosome as the $X$-body?

Describe the process of sex determination in humans.

In higher unisexual animals,one pair of chromosomes is not identical in two sexes. It is called as . . . . . . .