Why do animals avoid genetic monotony?
Answers
The process of sexual reproduction involves two parents, each contributing one gamete. Gametes are produced
by a process called meiosis, which starts by the duplication of the chromosomes, followed by two rounds of cell divisions and halving of the chromosome number. Gametes have half the chromosome number of other adult
cells of an organism.
A key feature of meiosis is the exchange of chromosome pieces which occurs in the first division of this process, called recombination or crossing over. Recombination is a very important source of genetic variation between individuals of sexually reproducing species, and the driving force for the process of natural selection
Animals avoid genetic monotony because year after year the same species will form with the same characteristics. This happens mostly in the asexual reproduction process.
Explanation:
In sexual reproduction, the same species will reproduce with the same features in the same progeny. For example, the cry of the sheep will be the same in all progeny or the voice of the sheep will be the same in all progeny. So a monotony of the genes will happen and the genes variations will not occur.