Question

In meiosis, the daughter cells differ from parent cell as well as amongst themselves due to

(a) Segregation, independent assortment and crossing over

(b) Segregation and crossing over

(c) Independent assortment and crossing over

(d) Segregation and independent assortment

Answer 1

Correct option  (b) segregation and crossing over 

Explanation :

The daughter cells differ from parent cell as well as amongst themselves due to the segregation and crossing over taking place in them Meiosis-I brings gene recombinations and haploidy of number of chromosomes. Crossing over during pachytene produces new combination of genes and is the major source of new genetic variations in the sexually reproducing organisms.

Anaphase-I results in segregation of Mendelian factors, essential for sexual reproduction, it also introduces genetic variablity.