If a cell contains 60 chromatids at the start of mitosis, how many chromosomes will be found in each daughter cell at the completion of the cell cycle?
A
15
B
45
C
60
D
120
E
30
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1
Understand that chromatids are duplicated chromosomes. At the start of mitosis, each chromosome consists of two sister chromatids.
If there are 60 chromatids at the start of mitosis, divide this number by 2 to find the number of chromosomes, since each chromosome is made up of two chromatids.
Calculate the number of chromosomes: 60 chromatids / 2 chromatids per chromosome = 30 chromosomes.
During mitosis, the sister chromatids are separated and distributed equally to the two daughter cells.
Each daughter cell will receive the same number of chromosomes as the original cell had before duplication, which is 30 chromosomes.