Cell Division (Mitosis & Meiosis) (Ch. 11, 12-4)

Question 1

What is the correct sequence of the cell cycle?

Answer 1

g1, s, g2, = interphase

Question 2

During which of the phases of interphase does DNA replication take place?

Answer 2

S phase- sythesis phase

Question 3

What are the phases of mitosis?

Answer 3

Prophase, metaphase, anaphase, telophase

Question 4

What takes place in prophase?

Answer 4

Prophase - centrioles, nuclear membrane, chromatin, spindle fibers

Question 5

What takes place in metaphase?

Answer 5

chromosomes line up

Question 6

What takes place in anaphase?

Answer 6

centromere divide & sister chromatids seperate

Question 7

What takes place in telophase?

Answer 7

(Opposite of prophase) cleavage furrow, spindle fibers, nuclear membrane, chromosomes

Question 8

The two sister chromatids are held together by the _

Answer 8

centromere

Question 9

During what phase of mitosis do the centromeres split and chromatids seperate?

Answer 9

stage 3, anaphase

Question 10

Compare and contrast mitosis and meiosis

Answer 10

mitosis - division of the cell nucleus (body cell)
meiosis - makes haploid cells (sex cells)

Question 11

How is a zygote formed?

Answer 11

When an egg and a sperm combine. (fertilization)

Question 12

What is crossing over? During which phase of meiosis does crossing over occur?

Answer 12

crossing over is the exchange of DNA between two homologous chromosome
- prophase 1