Meiosis and Genetics

Question 1

How many pairs of chromosomes does one person have?

Answer 1

23

Question 2

What are the chromosomes that make up a pair?

Answer 2

homologous chromosomes

Question 3

Homologous chromosomes aren’t always ……

Answer 3

identical

Question 4

In what process are gametes formed?

Answer 4

meiosis

Question 5

What are the cell divisions during meiosis?

Answer 5

meiosis I and meiosis II

Question 6

What’s the first phase of meiosis?

Answer 6

prophase

Question 7

How are homologous chromosomes held together?

Answer 7

a protein that acts like a zipper

Question 8

During synapsis, the chromosomes often swap pieces of ……..

Answer 8

DNA

Question 9

Where does meiosis take place?

Answer 9

the reproductive organs

Question 10

What happens when homologous pairs condense?

Answer 10

synapsis

Question 11

What are genes

Answer 11

DNA subjects that control the production of a protein

Question 12

Haploid

Answer 12

cell with n number of chromosomes

Question 13

How does Down Syndrome occur?

Answer 13

When sister chromatids fail to separate during anaphase II and there’s an extra chromosome at the chromosome 21 pair

Question 14

In what phase do chromosome centromeres attach to spindle fibers?

Answer 14

Metaphase 1

Question 15

In what phase are the chromosome numbers reduced from 2n to n?

Answer 15

Anaphase 1

Question 16

_____ results in four haploid cells, each with n number of chromosomes

Answer 16

Cytokineses

Question 17

What does a cell need to undergo before meiosis?

Answer 17

Interphase

Question 18

Is interphase apart of meiosis?

Answer 18

No

Question 19

Crossing over happens during…

Answer 19

Prophase 1

Question 20

Meiosis only occurs in what type of cell?

Answer 20

Reproductive cells

Question 21

What’s a gamete?

Answer 21

A sex cell

Question 22

Haploid

Answer 22

Cell that contains only a single set of genes

Question 23

One parent cell contains how many gametes?

Answer 23

Four gametes

Question 24

Chromatids spread apart during…

Answer 24

Meiosis II

Question 25

The purpose of meiosis is to produce…

Answer 25

Gametes

Question 26

A haploid cell is a…

Answer 26

Gamete

Question 27

The separation of sister chromatids occurs during…

Answer 27

Meiosis II

Question 28

Diploid (2n) gets reduced to Haploid (n) when…

Answer 28

telephase I is complete

Question 29

During meiosis, ____ _____ cells are produced, each of which are haploid

Answer 29

Four daughter

Question 30

Is meiosis the same as sexual reproduction?

Answer 30

No, it’s just apart of it

Question 31

What does random fertilization mean for genetic variation?

Answer 31

The chances of a certain egg meeting a certain sperm cell are one of the key sources of genetic variation.

Question 32

What would happen if crossing over didn’t occur during meiosis?

Answer 32

There would be less genetic variation, and a species would have a lower chance of evolving ..

Question 33

What is one way that mitosis differs from meiosis?

Answer 33

The main goal of mitosis is to produce more cells.

Question 34

What is one way that mitosis and meiosis are alike?

Answer 34

They have similar stages.

Question 35

What would happen if cells did not go through interphase before meiosis?

Answer 35

The cell wouldn’t grow to it’s full size and it would not replicate its DNA.