Question

1. The similar numbers of men and women on Earth is the result of:

   		independent assortment of chromosomes in male meiosis
   		segregation of chromosomes in female meiosis
   		random assortment of chromosomes in both males and females
   		segregation of chromosomes in male meiosis
   		independent assortment of chromosomes in female meiosis

Answer 1

Ans:- d) segregation of chromosomes in male meiosis .

concept:- see male meosis is mainly responsible for determining which sperm will have X and which one will have Y chromosome.

So all options contains female meosis is wrong.

now diff between segrigation and asssortment.

The law of segregation states that the two alleles of a single trait will separate randomly, meaning that there is a 50% either allele will end up in either gamete. This has to do with 1 gene.

The law of independent assortment states that the allele of one gene separates independently of an allele of another gene.

So law of segrigation is responsible for random division of equal proportion of x and y chromosome in sperm.