1. Before mitosis, humans have 46 chromosomes and 46 chromatids. During interphase when DNA duplicates in preparation for mitosis, humans have------------ chromosomes and------ chromatids. After mitosis has concluded, humans again have 46 chromosomes and 46 chromatids.
23
46
92
2. In DNA replication (just before mitosis), DNA unwinds and a copy is made of each strand. The end result is two identical copies, ready to go through mitosis. If the original DNA strand is A C C G T , what would the new DNA strand copy look like? -------------------------
G
C
T
A
3. What is the point of mitosis? Select all that apply.
A. To help a person grow
B. To repair damaged tissues
C. To help a cell grow larger
D. To make reproductive cells
A. To help a person grow
B. To repair damaged tissues
C. To help a cell grow larger