7.2 Mitosis

Question 1

How is DNA stored in the nucleus a majority of the time?

Answer 1

chromatin

Question 2

two of each type of chromosome

Answer 2

homologous chromosomes
one from Mom, one from Dad

Question 3

same gene but not necessarily identical

Answer 3

alleles

Question 4

DNA replication in S phase creates

Answer 4

sisters chromatids
- identical copies held together at centromeres

Question 5

What does chromatin do before the cell divides?

Answer 5

chromatin condenses into chromosomes

Question 6

Prophase/Prometaphase

Answer 6

chromatin condenses into chromosomes
nuclear membrane dissolves
spindle fibers form

Question 7

Metaphase

Answer 7

spindle fibers attach to sister chromatids
sister chromatids line up in the middle of the cell

Question 8

Anaphase

Answer 8

spindle fibers pull sister chromatids apart and bring them to opposite ends of the cell

Question 9

Telophase/Cytokinesis

Answer 9

nuclear membranes reform around DNA at opposite ends of cell
parent cell splits into two identical daughter cells

Question 10

compare parent cell to daughter cells

Answer 10

the parent cell is identical to each of the daughter cells

Question 11

compare daughter cells to each other

Answer 11

the daughter cells are identical to each other

Question 12

homologous chromosomes

Answer 12

two copies of the same gene, one from Mom and one from dad
not necessarily identical (alleles)

Question 13

sister chromatids

Answer 13

identical copies of the gene
created during DNA replication