why is meiosis important to the population?

Answer 1

Meiosis facilitates stable sexual reproduction. Without the halving of ploidy, or chromosome count, fertilization would result in zygotes that have twice the number of chromosomes than the zygotes from the previous generation. Successive generations would have an exponential increase in chromosome count, resulting in an unwieldy genome that would cripple the reproductive fitness of the species. Polyploidy, the state of having three or more sets of chromosomes, also results in developmental abnormalities or lethality.

Most importantly, however, meiosis produces genetic variety in gametes that propagate to offspring. Recombination and independent assortment allow for a greater diversity of genotypes in the population. As a system of creating diversity, meiosis allows a species to maintain stability under environmental changes.

Answer 2

First answer is right. It's possible to reproduce asexually, but the critical diversity needed in a population is severely lacking; this diversity is created by homologous recombination during meiosis. That plus the fact that 4n offspring, containing twice the amount of genetic material, are not usually viable (or fertile) due to issues arising from gene silencing and material and paternal genetic contributions (somewhat complex and poorly understood).

Answer 3

Simply, No meiosis=No population.

Answer 4

meiosis is very importat to life because it controls the chromosome no. if it cause chromosomal abnormalities.ofcourse the chromosomal no varies

Answer 5

who knows? don't you just love biology. meiosis, meitosis, mecrosis, meiwhattheheckever. you have to have a really good teacher to understand this stuff. many teacher's just teach it and don't explain it. i never got it.