Question

If their are 24 microspores mother cell in mango ,than how many meiotic divisions are req to form 576 haploid microspores. Give its formula

Answer 1

For producing xx number of seeds (or say zygote) xx number of egg cells must fuse with xx number of male gametes.

In angiosperms, 1 meiotic division of Megaspore mother cell leads to formation of one egg cell.

So xx egg cells are formed from xx number of meiotic division.

But 1 meiotic division of Sperm mother cell (2n) leads to formation off 4 haploid cells (male gametes).

So by Unitary method,

4 functional male gametes are formed from 1 Meiotic division

xx functional male gametes are formed from 1/4 x xx Meiotic divisions

So total number of meiosis needed to produce xx seeds = xx + xx/4.