mitosis and meiosis number of chromosomes questionWatch
Hey guys for the question below the answer is D hence in its technically stating that the chromosomes in the cell are doubling at one point which i don't quite understand. How do the chromosomes initially double in the first place?
4 is mitosis
1 is meiosis
This is what i understand so far. Intitially after the whole process generally for both mitosis and meiosis there are only chromatids in the cell, the chromatids are now called chromosomes therefore the amount of chromosomes in the cell now is 2n. These cells then undergo interphase and another chromosome(previously a chromatid) is made via dna repication. Now there are 4n chromosomes. As there are now two chromatids attached to the centromere it is renamed as chromosomes. Hence now the cell has 2n chromosomes.Is my understanding correct?
So after meiosis occurs the haploid cells now have 23 chromatids (n) at the end of the process, now called chromosomes. The 23 chromatids then undergoes interphase and the same process as I said before then 46 chromosomes are present so won't the number of chromosomes be 2n instead of 4n for meiosis?
t is a cell which undergoes interphase, not chromatids.