2006-11-09 08:27:49 · 4 answers · asked by Phong D 1 in Science & Mathematics ➔ Biology
The formation of gametes during Meiosis, is arrive at half the original chromosome number i.e. Haploid (n). This allows for the gametes (also half chromosome number) from the other sex cell
to fertilise it. Thus at fertilisation a full compliment of chrosomes
are received from each parent. The new cell is hence diploid (2n).
If meiosis does not occur one would have a doubling of the chromosome number continually, eg. 46(male) + 46(female)= 92(new individual)
With meiosis,its 46(male) then meiosis= 23.
46(female), then meiosis=23. Thus male 23 + female 23 equals 46(new individual) same as both parents
2006-11-09 08:54:28 · answer #1 · answered by quinton p 2 · 0⤊ 0⤋
Two reasons.
1. To control the number of chromosomes in an organism.
2. To allow for greater genetic diversity.
2006-11-09 16:58:42 · answer #2 · answered by Shaun 4 · 0⤊ 0⤋
To become haploid and crossed over, basically. Sexual reproduction rather demands that the chromosome matching be haploid; one set of chromosomes from each parent. Imagine otherwise.
2006-11-09 16:36:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋
To maintain the number the chromosomes in the species.
2006-11-09 21:16:54 · answer #4 · answered by moosa 5 · 0⤊ 0⤋