Day 11 Mitosis and Meiosis Quiz Answers

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Name: ____________________

SBI3U: Genetic Processes Cell Cycle, Mitosis and Meiosis Quiz Date:____________________

Circle one answer for each question. Read the question carefully.

1.

Which of the following is mitosis NOT used for? a.

Repair of a wound in multicellular organisms b.

Renewal of worn out stomach cells in a mammal c.

Asexual reproduction in unicellular organisms d.

Growth and development (e.g., baby in mother’s womb) e.

Production of gametes

2.

Put the following stages of the cell cycle in order. a.

5,3,1,2,4 b.

2,3,1,5,4 c.

3,1,4,2,5 d.

1,2,3,4,5 e.

4,1,2,5,3

3.

During which stage of mitosis does the nuclear membrane reform? a.

Telophase b.

Interphase c.

Anaphase d.

Prophase e.

Metaphase

4.

After meiosis I, a cell has 20 chromosomes, how many chromosomes did the parent cell have? a.

40 b.

10 c.

20 d.

30 e.

23

5.

When ______________ occurs between non-sister chromatids, genetic exchange between chromosomes provides new combinations of genes that are different from either parent. a.

Cytokinesis b.

Crossing-over c.

Cell division d.

Centromeres splitting e.

Independent assortment

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Name: ____________________

6.

During which stage(s) of meiosis do tetrads line up at the equator? a.

Metaphase I b.

Telophase I c.

Prophase I d.

Metaphase II e.

Metaphase I and II

7. In some cats the gene for tail length shows incomplete dominance. Cats with long tails and cats with no tails are homozygous for their respective alleles. Cats with one long tail allele and one no tail allele have short tails. Give the phenotypic ratios of the offspring of a cross between a cat with a long tail and a cat with a short tail. (4 marks)

Genotypes:

Cat with long tail: T

L

T

L

Cat with short tail: T

L

T

N

Cat with no tail: T

N

T

N

Cross: T

L

T

L x T

L

T

N

Punnett Square

T

L

T

L

T

L

T

L

T

L

T

L

T

L

T

N

T

L

T

N

T

L

T

N

Phenotypic Ratio:

50% Cats with long tail

50% Cats with short tail

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