Meiosis and Mitosis Validation

Question 1

Meiosis - Interphase I

Answer 1

Chromosomes are duplicated. The resulting sister chromatids centromere.

Question 2

Meiosis - Prophase I

Answer 2

Chromosomes condense & bind. Chiasmata form between non-sister chromatids & spindle fibres emerge from centrosomes.

Question 3

Meiosis - Prometaphase I

Answer 3

Chromosomes separate as chromosomes continue to condense & nuclear envelope disintegrates.

Question 4

Meiosis - Metaphase I

Answer 4

Homologous chromosomes randomly assemble at the metaphase plate.

Question 5

Meiosis - Anaphase I

Answer 5

Spindle microtubules pull the homologous chromosomes apart while the sister chromatids are still attached.

Question 6

Meiosis - Telophase I

Answer 6

Sister chromatids arrive at the poles of the cell and continue to condense, the cytoplasm is divided by a cleavage furrow.

2 Haploid Cells containing 1 duplicated copy of each homologous chromosome pair.

Question 7

Meiosis - Prophase II

Answer 7

Sister chromatids condense, spindle begins to form & nuclear envelope fragments.

Question 8

Meiosis - Prometaphase II

Answer 8

Nuclear envelope disappears & spindle fibres engage the individual kinetochores on sister chromatids.

Question 9

Meiosis - Metaphase II

Answer 9

Sister chromatids line up at the metaphase plate.

Question 10

Meiosis - Anaphase II

Answer 10

Sister chromatids are pulled apart.

Question 11

Meiosis - Telophase II

Answer 11

Chromosomes arrive at the poles of the cell and decondense. Nuclear envelope surrounds the four nuclei. Cleavage furrow divides the cytoplasm.

4 Haploid cells with unique chromosome combinations.

Question 12

Mitosis - Interphase

Answer 12

The nucleus and nuclear envelope are distinct and the chromosomes are in the form of threadlike chromatin.

Question 13

Mitosis - Prophase

Answer 13

The chromosomes condense, centrioles move to the opposite poles of the cell and the nuclear envelope begins to disintegrate.

Question 14

Mitosis - Metaphase

Answer 14

Thick, coiled chromosomes, each with 2 chromatids are lined up on the metaphase plate.

Question 15

Mitosis - Anaphase

Answer 15

The chromosomes from the metaphase split apart leading to their movement to the opposite poles of the cell.

Question 16

Mitosis - Telophase

Answer 16

the final stage of cell division in which the spindle disappears, cytoplasm divides and the nucleus forms around each set of daughter chromosomes.

Question 17

What are 3 similarities between mitosis and meiosis?

Answer 17

• Both take place within the cell and can be observed microscopically.
• Both involve cell division
• Both involve IPMAT

Question 18

DNA Helicase Function

Answer 18

Helicase separates double-stranded DNA into single strands allowing each strand to be copied.

Question 19

DNA Polymerase Function

Answer 19

An enzyme that is responsible for forming new copies of DNA, in the form of nucleic acid molecules.

Question 20

How many divisions are there in mitosis?

Answer 20

2

Question 21

How many divisions are there in meiosis?

Answer 21

4, Mitosis I & Mitosis II

Question 22

Are parent and daughter cells identical in meiosis?

Answer 22

No, the daughter cells are not genetically identical to each other because of the recombination in prophase?

Question 23

Are parent and daughter cells identical in mitosis?

Answer 23

Yes, parent and daughter cells are genetically identical in mitosis.

Question 24

How many chromosomes does a haploid contain?

Answer 24

Haploid cells contain only one set of chromosomes, represented by the letter n.

Question 25

How many chromosomes does a diploid contain?

Answer 25

The total number of chromosomes in diploid cells is represented as 2n, which is twice the number of chromosomes in a haploid cell (n).

Question 26

Function of mitosis

Answer 26

• Cell growth
• Cell replacement
• Cell repair

Question 27

Function of meiosis

Answer 27

The main function of the meiotic division is the production of gametes (egg cells or sperm cells).