Ch28- Oogenesis

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1

Fetus

where does oogenesis begin?

2

Oogonia

what cell undergoes mitosis in oogenesis

3

Primordial follicle

what follicle are primary oocyte start to form

4

3-7 months

when can primary occytes can be seen in female fetus?

5

Prophase I

what phase are primary oocytes in fetus suspended

6

2 million

how many primary oocytes are females born with

7

400,000

how many primary oocytes do females have at puberty

8

Puberty

primary oocytes will remain suspended until when?

9

NO (suspended in prophase I)

do primary ooctyes complete first meiotic division after birth?

10

Meiosis I

after puberty 1 select oocyte finishes what cycle?

11

First polar body extruded

after selected cell completes meiosis I what occurs?

12

Secondary oocyte

what does the cell become after meiosis I is complete and first polar body is extruded ?

13

Metaphase

a secondary oocyte reaches what stage in meiosis II when it waits for sperm

14

Meiosis II

if fertilization occurs with secondary occyte what is completed

15

Second polar body extrude

what occurs after meiosis II is complete in fertilized cell?

16

oogonium

female stem cell

17

Secondary

an ovulated oocyte it what type?

18

Growing follicle

what is know as a secondary follicle

19

Primordial follicle

what is the first follicle in oogenesis
egg is about to be release into ovary

20

Graatian (vesicular) follicle

what is know as a tertiary follicle?

21

tetrad

structure containing 4 chromatids that forms during meiosis

22

synapsis

the pairing of homologous chromosomes during meiosis

23

Tetrad, Synapsis

in a primary oocyte what happens to the chromosomes in the final stage (2)

24

Diploid

a primary oocyte is a haploid or diploid?

25

Haploid

a secondary oocyte is a haploid or diploid?

26

fertilization

what must occur for meiosis II to be completed?

27

Metaphase of Meiosis II

secondary oocyte executing out second polar body during what stage?