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Flashcards in Chapter 8 Deck (28)
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Coiled up DNA in the nucleus

Chromatin

1

One half of the chromosome

Chromatid

2

Where sister chromatids are attached

Centromere

3

Cells that contain both chromosomes of a homologous pair

Diploid(2n) cells

4

Body cells

Somatic cells

5

Cell with one chromosome of a pair

Haploid(1n) cells

6

Sex cells

Gametes

7

5 phases of the cell cycle

-first growth
-synthesis
-second growth
-mitosis
-cytokinesis

8

What phases are in interphase

First growth
Synthesis
Second growth

9

What phase do cells spend most of their time in

G1

10

Steps of mitosis

Prophase
Metaphase
Anaphase
Telophase

11

Centrosome

Organelles where spindle fibers come from

12

Spindle fibers

Fibers that attach to the chromosomes

13

Cytokinesis

When the cell divides

14

Each new cell gets a

Nucleus

15

In animal cells during cytokinesis a ___ forms

Cleavage furrow

16

In plant cells during cytokinesis a ___ forms

Cell plate

17

End results of cytokinesis(3)

Two new cells
Smaller in size than original
Same number of chromosomes(usually)

18

Process of nuclear divisions that reduces the number of chromosomes by half

Meiosis

19

___ divisions take place during meiosis

2

20

Homologous pair

Chromosomes of the same set from the different parents

21

Crossing-over

When a homologous pair combine part of their chromosomes

22

Meiosis 1

When a sex cell splits,ms plotting the chromosome count in half

23

Meiosis 2

When two sex cells split after meiosis 1 but have exact copies of the two starter ones

24

Ovum

Egg

25

What happen when the egg is formed

3 polar bodies are formed with one egg

26

Spermatid

Sperm

27

1 cell can create ___ Spermatid

4