What
is the significance of meiosis?
What is the significance of meiosis?
Meiosis
is the process involving the reduction in
the amount of genetic material. It comprises two successive nuclear
and cell divisions, with a single cycle of DNA replication. As a
result, at the end of meiosis II,
four haploid cells are formed.
Significance
of meiosis
1. Meiosis
maintains the chromosome number from generation to generation. It
reduces the chromosome number to half so that the process of
fertilisation restores the original number in the zygote.
2. Variations are
caused by the cross-over and the random distribution of homologous
chromosomes between daughter cells. Variations play an important role
in evolution.
3. Chromosomal
mutations are brought about by the introduction of certain
abnormalities. These chromosomal mutations may be advantageous for an
individual.
Meiosis is the process involving the reduction in the amount of genetic material. It comprises two successive nuclear and cell divisions, with a single cycle of DNA replication. As a result, at the end of meiosis II, four haploid cells are formed.
Significance of meiosis
1. Meiosis maintains the chromosome number from generation to generation. It reduces the chromosome number to half so that the process of fertilisation restores the original number in the zygote.
2. Variations are caused by the cross-over and the random distribution of homologous chromosomes between daughter cells. Variations play an important role in evolution.
3. Chromosomal mutations are brought about by the introduction of certain abnormalities. These chromosomal mutations may be advantageous for an individual.
