A 2n cell has 23 pairs of chromosomes. At the end of Meiosis 1, how many individual chromosomes will each daughter cell have? ____
IS it 46?
I don't think so, based on this. Read it for yourself.
http://cyberbridge.mcb.harvard.edu/mitosis_6.html
Yes, it is correct that each daughter cell will have 46 individual chromosomes at the end of Meiosis 1.
To understand why this is the case, let's review the process of Meiosis. Meiosis is a type of cell division that occurs in sexually reproducing organisms to produce gametes (sex cells) with half the number of chromosomes as the original parent cell.
In a 2n cell, like the one you mentioned, there are 23 pairs of chromosomes. These pairs are also known as homologous chromosomes because they contain similar genetic information.
During Meiosis 1, the cell undergoes replication and division. In the first stage of Meiosis 1, called Prophase 1, the homologous chromosomes pair up and can undergo genetic recombination through a process called crossing over. This results in genetic diversity in the gametes.
Then, during the next stages of Meiosis 1, called Metaphase 1, Anaphase 1, and Telophase 1, the homologous chromosomes separate and move into two separate daughter cells. Each daughter cell receives one chromosome from each pair of homologous chromosomes.
At the end of Meiosis 1, each daughter cell has half the number of chromosomes as the original parent cell. In this case, since the original parent cell had 23 pairs of chromosomes (46 chromosomes in total), each daughter cell will have 23 individual chromosomes.