List the three cell cycle stases included in Interphase List the names of the tw

Question

List the three cell cycle stases included in Interphase List the names of the two processes that occur during M-phase of the cell cycle List the five major phases of Mitosis in their correct order. State the stage of Mitosis described below: the nuclear envelope breaks down and chromosomes attach to spindle microtubules chromosomes align at die spindle equator sister chromatids separate and move to opposite poles the nuclear envelopes reassemble and the contractile ring is visable What are the major differences between Mitosis and Meiosis with respect to the following: Which of the following best describes the chromosomes that are lined up at the spindle equator during metaphase of Meiosis I? One pair of sister chromatids Two pairs of sister chromatids Replicated chromosomes single-file Pairs of replicated homologous chromosomes double-file A and C B and D List 3 mechanisms (including those in Meiosis) by which sexual reproduction generates genetic diversity. P

Explanation / Answer

Answer:

1Ans).

1. Interphase, 2. Mitotic phase, 3. Cytokinesis

2Ans).

1. Karyokinesis, 2. Cytokinesis

3Ans).

1. Interphase, 2. Prophase, 3. Metaphase, 4. Anaphase, 5. Telophase, 6. Cytokinesis

4Ans).

a. Prophase

b. Metaphase

c. Anaphase

d. Telophase

5Ans).

Mitosis

Meiosis

a. Starting cell type

Somatic

Germ cells

b. Starting cell (diploid or haploid)

Diploid/haploid

Diploid

c. Cell types generated

Somatic cells

Germ cells

d. Cells generated (diplod or haploid)

Diploid/haploid

haploid

e. number of cells generated

2

4

f. Result: genetic constancy or diversity

constancy

diversity

6Ans). D. Pairs of replicated homologous chromosomes double-file

7Ans).

1. Zygoten is a sub-stage of prophase l, in which homologous chromosomes pair up (synapsis),

2. Pachytene is a sub-stage of Prophase l, in which crossing over occurs between non-sister chromatids of homologous chromosomes.

3. Anaphase l, in which homologous chromosomes are separated.

8Ans).

1. Kinetochore microtubules, 2. Interpolar microtubules, 3. Astral microtubule

Mitosis

Meiosis

a. Starting cell type

Somatic

Germ cells

b. Starting cell (diploid or haploid)

Diploid/haploid

Diploid

c. Cell types generated

Somatic cells

Germ cells

d. Cells generated (diplod or haploid)

Diploid/haploid

haploid

e. number of cells generated

2

4

f. Result: genetic constancy or diversity

constancy

diversity

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