Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!
Why is it necessary to reduce the number of chromosomes in the formation of gametes but not in somatic cells?
Why is it necessary to reduce the number of chromosomes in gametes, but not other cells of an organism? Gametes have less chromosomes than other cells so the offspring, when joined with another gamete, will have the same amount of chromosomes as the parents.
Why is it necessary to reduce the chromosome number in gamete cells egg and sperm but not other cells of an organism cite source S used 2 pts?
Meiosis is a reduction division that is necessary in sexually reproducing organisms to maintain the species number of chromosomes. … To prevent that, meiosis occurs in the gonads–ovaries or testes. If the ovary or teste cell is diploid(2n), the gametes or sex cells–sperm and eggs will be haploid(n)after meiosis occurs.
Why is it important that the number of chromosomes be reduced during meiosis quizlet?
Why is meiosis necessary in sexually reproducing organisms? It is necessary because the diploid number of chromosomes has to be reduced by half in each of the parents in order to produce diploid offspring.
Why do gametes not have 46 chromosomes?
A gamete is formed by meiosis in the germinal cells. Meiosis is also known as reductional division because after meiosis 4 daughter cells are produced with half of the total no. of chromosomes present in each. Therefore a gamete formed through this process has only 23 chromosomes and not 46.
When chromosomes fail to separate during meiosis This is known as?
Aneuploidy, an abnormal number of chromosomes in a cell, is caused by nondisjunction, or the failure of chromosomes to separate at meiosis.
What happens to the chromosomes during meiosis?
During the interphases of meiosis, each chromosome is duplicated. In meiosis, there are two rounds of nuclear division resulting in four nuclei and usually four daughter cells, each with half the number of chromosomes as the parent cell.