Why do variations occur in sexual reproduction?

Asked by ashok sharma | 3rd Mar, 2012, 09:00: PM

Expert Answer:

In sexual reproduction, the offsprings receive some genes from mother and some from father. Each gamete (sperm or egg) contains a mixture of genes from two different parents. Crossing-over and Independent assortment promote variation. During fertilisation, mixing of maternal and paternal genes in various combinations occur.
Hence the offspring will exhibit genetic variations and will not be identical to their parents or to one another. 

Answered by  | 5th Mar, 2012, 07:51: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.