PATHOLOGY

Detailed explanation-1: -We need meiosis to halve the number of chromosomes going into sex cells. It is because when the egg and the sperm get fuses in order to form the zygote. There has to be the same number of chromosomes as the parent.

Detailed explanation-2: -The reduction of chromosome number in meiosis is a central event in the lives of most eukaryotes, including humans. It makes diploidy possible because the gametes that are produced with half the chromosome number of their parent cells can then fuse to form a diploid zygote.

Detailed explanation-3: -Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

Detailed explanation-4: -It is important that gametes have half the amount of DNA (haploid) so that at fertilisation when the egg and sperm combine it results in a cell with a full complement of DNA. Errors can occur during meiosis producing gametes with an extra or missing chromosome.

Detailed explanation-5: -It maintains the constant number of chromosomes by halving the same. This is important because the chromosome number doubles after fertilization. In this process independent assortment of maternal and paternal chromosomes takes place. Thus the chromosomes and the traits controlled by them are reshuffled.