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Flashcards in Meiosis Deck (22)
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Meiosis

Cell division in which the number of chromosomes per cell is cut in half

1

Sexual reproduction

Requires two parent cells, each contributes half of the chromosomes

2

Gametes

Sex cells that join during sexual reproduction; half the normal number of chromosomes

3

Female gamete is a...

Egg or ova

4

Male gamete is a...

Sperm

5

Zygote

Cell that is formed from the union of egg and sperm

6

Haploid

Half the normal number of chromosomes which is created by meiosis

7

Diploid

The normal number of chromosomes

8

In humans... How many chromosomes for haploid and diploid?

Haploid- 23
Diploid- 46

9

Homologous chromosomes

Chromosomes that occur in pairs and contain similar genes

10

Pairing of homologous chromosomes

Synapsis

11

Crossing over

Exchange of a portion of a chromatid between homologous chromosomes

12

Tetrad

A group of two chromosomes each with two chromatids

13

Prophase I

Synapsis and crossing over

14

Metaphase I

Paired chromosomes line up in middle

15

Anaphase I

Chromosomes move to opposite poles

16

Telophase I

Cells divide to form two cells

17

Interkinesis

Resting stage between cell divisions

18

Prophase II

Individual chromosomes visible

19

Metaphase II

Individual chromosomes line up in middle

20

Anaphase II

Chromatids separate and move to opposite poles

21

Telophase II

Cytoplasm divides