Multiple Choice
During mitosis, after cytokinesis and before the next round of DNA replication, how many chromatids are present in each new human somatic cell?
193
views
9. Mitosis and Meiosis
Mitosis
Multiple Choice
If there are 32 sister chromatids in a normal somatic cell, how many chromosomes are present?
A
8
B
16
C
32
D
64
Verified step by step guidance1
Recall that sister chromatids are identical copies of a single chromosome, connected at the centromere, formed during DNA replication in the S phase of the cell cycle.
Understand that the number of sister chromatids is twice the number of chromosomes because each chromosome consists of two sister chromatids after replication.
Set up the relationship: Number of sister chromatids = 2 \(\times\) Number of chromosomes.
Given that there are 32 sister chromatids, use the equation 32 = 2 \(\times\) Number of chromosomes to find the number of chromosomes.
Solve for the number of chromosomes by dividing both sides of the equation by 2: Number of chromosomes = \(\frac{32}{2}\).
Related Videos
Related Practice
