Question

Question 3 

Cell cycle progression is controlled by the rhythmic accumulation and degradation of:

Question 3 options:

	Cyclins
	Cyclin-dependent kinases (Cdks)
	Both

Question 4 

During metaphase of mitosis:

Question 4 options:

	DNA is replicated
	Sister chromatids line up together on the equator
	DNA is uncoiled and in use
	Spindle fibers are absent
	Preparation for cell division begins

Question 5 

During cell division, cytokinesis is completed by the end of:

Question 5 options:

	prophase
	anaphase
	metaphase
	telophase
	interphase

Question 6 

Crossing over or recombination most frequently occurs during:

Question 6 options:

	prophase I of meiosis
	metaphase II of meiosis
	prophase of mitosis
	telophase of mitosis
	prophase II of meiosis

Question 7 

In eukaryotes, chromosomes are duplicated during which stage of the cell cycle?

Question 7 options:

	G1
	S
	G2
	M
	C1

Question 8 

Which of the following events is not common to both mitosis and meiosis?

Question 8 options:

	Sister chromatids separate
	Homologous chromosomes pair and separate
	Nuclear membrane breaks down
	cytokinesis

Question 9

At the conclusion of mitosis of a diploid cell, there are _____ haploid cell products produced.

Question 9 options:

	0
	1
	2
	3
	4

Question 10

A diploid heterozygous cell with the genotype Bb undergoes meiosis and no crossing over occurs.

At the end of meiosis I, cytokinesis occurs leaving two products. What are the resulting product genotypes of meiosis I?

Question 10 options:

	Bb and Bb
	BB and BB
	bb and bb
	BB and bb

Answer 1

3. cyclin dependent kinases- activity increases and decreases according to the cyclin attached to it.

4. metaphase is the third phase and the chromosomes divides into two cells, answer is --Sister chromatids line up together on the equator.

5. Telophase- forms two separate nucleus with equal number of chromosomes and nucleolus reappears.

6. prophase I of meiosis- homologous chromosomes line up together and intersect a portion of chromatid with the other one.

7. S phase- DNA replicates and sister chromatids are formed

8. Homologous chromosomes pair and separate- this occurs in meiosis and not in mitosis

9. 2diploid cells are produced

10. BB and bb- homologous chromosomes separates but the sister chromatids are same