Mitosis and Meiosis Interactive Video Quiz Sheet

Question 1

Chromatin shortens and thickens to form these distinct structures called____(Mitosis).

Answer 1

chromosomes

Question 2

DNA is replicated during the stage between cell divisions called____(Mitosis).

Answer 2

Interphase

Question 3

True or False: The division of the cytoplasm following mitosis is called cytokinesis?

Answer 3

True

Question 4

The first stage of mitosis, the stage when the nuclear membrance begins to be reabsorbed into the cell, is called_____.

Answer 4

Prophase

Question 5

As a result of meiosis, sex cells are formed that have___the numver of chromosomes of body cells.

Answer 5

Half

Question 6

True of False: Pairs of identical chromosomes are also called homologous chromosomes.

Answer 6

True

Question 7

True or False: Normal body cells share diploid because they possess one of each different chromosomes.

Answer 7

True

Question 8

True or False: During meiosis, the DNA is replicated twice.

Answer 8

False–once.

Question 9

True or False: In plant and animals cells, meiosis occurs only in germ cells.

Answer 9

True

Question 10

Only___can undergo meiosis?

Answer 10

Germ

Question 11

When a cell first to undergo mitosis, it loses its nuclear membrance and chromosomes are formed from chromatin. this stage of mitosis is called___?

Answer 11

Prophase

Question 12

Chromosomes move rapidly toward the mitosis centers during___?

Answer 12

Anaphase

Question 13

Sperm and egg cells result from a special type of cell division called___.

Answer 13

Meiosis

Question 14

DNA undergoes a process called___when it is duplicated?

Answer 14

Replication

Question 15

When a cell is not undergoing the process of mitosis, it is in a stage called___.

Answer 15

Interphase

Question 16

If an organism possesses just four different kinds of chromosomes and yet it’s cells have a total of eight chromosomes, weight would be its___number of chromosomes?

Answer 16

Diploid

Question 17

For the organisms descrived above in the previous question, its___number of chromosomes is four.

Answer 17

Haploid

Question 18

Duplicated chromosomes are arranged in the middle of the spindle during___

Answer 18

Metaphase

Question 19

The stage of mitosis that happens at the same time the cytoplasm divides is called___.

Answer 19

Telophase

Question 20

Eggs are also called___.

Answer 20

Ova

Question 21

The arrangement of microtubules that become visible during mitosis and that separate the chromosomes into equal groups is called the____.

Answer 21

Spindle

Question 22

Telophase is the final stage of____.

Answer 22

Mitosis

Question 23

Types of cells:
Mitosis
Meiosis

Answer 23

Mitosis- Normal body cells such as muscle cells, blood, and skin cells.
Meiosis- Germ cells in ovary + testes

Question 24

Number of Divisions:
Mitosis
Meiosis

Answer 24

Mitosis- 1

Meiosis- 2

Question 25

Homologous chromosomes pair: Mitosis Meiosis

Answer 25

Mitosis- no | Meiosis- yes-pair up in prophase I

Question 26

Final chromosomes number: Mitosis Meiosis

Answer 26

Mitosis- 46 | Meiosis- 23

Question 27

Crossing over: Mitosis Meiosis

Answer 27

Mitosis- no | Meiosis- yes in Prophase I

Question 28

Daughter cells: Mitosis Meiosis

Answer 28

Mitosis- 2 identical | Meiosis- 4 unique

Question 29

What are gametes?

Answer 29

Human gametes are sperm and egg cells, each of which contain 23 chromosomes.

Question 30

What key step occurs in interphase prior to cell division?

Answer 30

Duplication of chromosomes

Question 31

What are homologous chromosomes?

Answer 31

Pairs of chromosomes that have the same genes, but possible different characteristics or alleles.

Question 32

What process occurs between homologous chromosomes during Phrophase I?

Answer 32

Crossing over

Question 33

What dissapear during Prophase I?

Answer 33

The nucleus disappears

Question 34

What happens to the homologous pairs during Metaphase I?

Answer 34

They line up randomly along the midline of the dividing cell. Spindle fibers form one pole attatch to the centromere of one homologous chromosome. Spindle fibers from the opposite pole attatch to the other homologous chromosome of the pair.

Question 35

What separates during Anaphase I?

Answer 35

The homologous chromosomes

Question 36

How many cells are produced in Telophase II?

Answer 36

4

Question 37

What are the differences between Metaphase I and Metaphase II?

Answer 37

Metaphase I- Homologous line up | Metaphase II- Single double stranded line up

Question 38

Identify three ways that genetic variation can occur?

Answer 38

1) Random fertilization 2) Crossing over 3) Mutations 4) Independent assortment

Question 39

Briefly explain how the three processes promote variation?

Answer 39

Mutations- changes in DNA, alleles. Crossing over- homologous pairs cross. Allows diversity by allowing genes from each parent to intermix. Large amount of ways to exchange and end up with different genes. Fertilization- each parent is allowed to randomly contribute a unique set of genes to a zygote.