1. Meiosis cell divison occur in a. n,2n,3n,4n,5n,6n b. 2n,4n,6n
Answers
Answer:
Remember that is a typical diploid cell (2n) , there are two copies of each chromosome. Homologous chromosomes, or homologues, are pairs of chromosomes identical in size, shape, and (for the most part) gene sequence, that interact during meiosis. (One Homologue may carry the blue eye color gene, while the other carries the brown eye color gene, but BOTH chromosomes carry an eye color gene! More on this later...)
II. Overview of meiosis: 1diploid cell (2n) duplicates its DNA (In S-phase), then splits that DNA up into 4 genetically unique haploid cells (n).
Question: How can a male (diploid; 46 chromosomes) and a female (diploid; 46 chromosomes) produce a child with 46 chromosomes? Answer: reduce the number of chromosomes in half from 23 pairs to 23 in the eggs and sperm - then combine them to make a new individual with 23 pairs again!)
All cells in a higher eukaryote (like us) are diploid � EXCEPT...for our germ cells � eggs and sperm.
If you looked at a karyotype of a germ cell - egg or sperm cell - you would see only 1 of each chromosome in a karyotype, not two!!! There are NO paired homologues any more!!! Germ cells have only half the number of chromosomes as a diploid cell � one of each pair.
The number of chromosomes is reduced from 46 (23 pairs) to 23 during the process of meiosis
Answer:
Option b 2n , 4n, 6n. Hope it helps you