Ch. 4.1 Meiosis vs. Mitosis

Ch. 4.1Meiosis vs. Mitosis

1. How do meiosis and mitosis differ?

Focus Questions

There are four phases of meiosis I.

1. How do meiosis & mitosis differ?

There are four phases of meiosis II.

1. How do meiosis & mitosis differ?

Normal human cell:

23 paired chromosomes

After duplicating:

46 paired chromosomes

Haploid (egg cell):

23 individual chromosomes

Haploid (sperm cell):

23 individual chromosomes

Mitosis Review

During what phase do the chromosomes line up in the middle of the cell?

a. b. c. d.

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a. Prophase

b. Metaphase

c. Anaphase

d. Telophase

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During what phase does the DNA condense into chromosomes and the nuclear membrane disappear?

a. b. c. d.

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a. Telophase

b. Prophase

c. Anaphase

d. Metaphase

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During telophase, two identical __________ form.

a. b. c. d.

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a. Centrioles

b. Chromosomes

c. Nuclei

d. Spindle fibers

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When does the cell actually split into 2 separate daughter cells?

A. Prophase

B. Anaphase

C. Telophase

D. Metaphase

E. Interphase

F. Cytokinesis

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Prophase

Anaphase

Telophase

Meta

phase

Inte

rphase

Cytokinesis

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When does the cell grow & develop?

A. Prophase

B. Anaphase

C. Interphase

D. Metaphase

E. Telophase

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Prophase

Anaphase

Inte

rphase

Meta

phase

Telophase

0 0 000

1. How do mitosis and meiosis differ?

Meiosis Both Mitosis

1. How do mitosis and meiosis differ?

Meiosis Both Mitosis

- Reproductive cells

- Nucleus divides 2x

- results in 4 haploid cells

- importance: forms egg & sperm cells

- Start with diploid cell

-Cell division: cell & nucleus divide

- DNA replicates & is passed on

-Body cells

- nucleus divides 1x

- results in 2 diploid cells (identical)

- importance: growth, repair, reproduction (single-celled)

How many cells result from the mitotic phase (mitosis & cytokinesis)?

A. 1

B. 2

C. 3

D. 4

1 2 3 4

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How many cells result from meiosis?

A. 1

B. 2

C. 3

D. 4

1 2 3 4

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What is the name for a cell that has only half of the chromosomes?

A. chromatid

B. diploid

C. haploid

D. homologue

chromatid

diploid

haploid

homologue

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Why type of cells go through meiosis?

A. Body cells

B. Brain cells

C. Haploid cells

D. Reproductive cells

Body cells

Brain ce

lls

Haploid ce

lls

Reproducti

ve cells

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During meiosis, when do homologous chromosomes split up into 2 cells?

A. Interphase

B. Meiosis I

C. Telophase II

D. Meiosis II

Inte

rphase

Meio

sis I

Telophase

II

Meio

sis II

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In which cell division is the end result 4 haploid daughter cells?

A. Interphase

B. Mitosis

C. Meiosis I

D. Meiosis II

Inte

rphase

Mito

sis

Meio

sis I

Meio

sis II

0 000

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