Bio Lab Chapter 14

Front 1

what is the purpose of meiosis?

Back 1

produce haploid cells

Front 2

meiosis occur in the:
___ for humans
___ for plants

Back 2

gonads (testes and ovaries)
sporophytes

Front 3

homologous chroms. code for the same ___ as another

Back 3

trait

Front 4

"joining" of chroms. in prophase I

Back 4

synapsis

Front 5

pair of synapsed homo. chroms.

Back 5

tetrad

Front 6

exchange of genetics material between non-sister chromatids

Back 6

crossing over

Front 7

Division I

Back 7

diploid->haploid

Front 8

gametes

Back 8

reproductive cells

Front 9

gametogenesis

Back 9

formation of gametes

Front 10

spermatogenesis

Back 10

the formation of sperm cells

Front 11

oogenesis

Back 11

the formation of egg cells

Front 12

tightly coiled tubes that make up male testes

Back 12

seminifurous tubules

Front 13

diploid cells that are packed on the inner walls of testes

Back 13

spermatogonia

Front 14

some daughter cells called ___ move to the lumen and begin meiosis

Back 14

primary spermatocytes

Front 15

meiosis I splits primary into ___

Back 15

secondary spermatocytes

Front 16

spermatids mature and differentiate into ___ cells a they move along the length of the tubule

Back 16

sperm

Front 17

oogenesis occurs in the ___ of females

Back 17

ovaries

Front 18

cells that produce female gametes are called ___

Back 18

oocytes

Front 19

oocytes are not produced ___

Back 19

continually

Front 20

during fetal development, ___ are produced in the ovaries

Back 20

oogonia

Front 21

at birth the primary oocytes have begun ___ but are arrested in ___

Back 21

meiosis I, prophase I

Front 22

___ converts spermatids into ___

Back 22

spermiogenesis, spermatozoa

Front 23

immature sperm go to the ___ of the testes where they mature

Back 23

epididymis

Front 24

prior to ___oocytes complete meiosis I

Back 24

ovulation

Front 25

product of ovulation is one haploid secondary oocyte (arrested in ___) and one haloid polar body (oocyte gets majority of cytoplasm)

Back 25

metaphase II

Front 26

secondary oocyte housed within ___ of the ovary

Back 26

follicle

Front 27

oocyte expelled from ___ during ovulation

Back 27

Graafian follicle

Front 28

when ___ is penetrated by sperm cell, meiosis II proceeds to completion

Back 28

ovum(oocyte)

Front 29

secondary oocyte divides and result is ___

Back 29

second polar body, egg

Front 30

adult plant

Back 30

diploid sporophyte

Front 31

houses reproductive structures in plants

Back 31

flower

Front 32

male structure of plants is comprised of __ and ___

Back 32

stamens, filament, anther

Front 33

___ is where sporogenesis occurs in plants

Back 33

anther

Front 34

anther houses ___ cells

Back 34

microspore mother cells

Front 35

microspores differentiate into ___ (replaces swimming sperm)

Back 35

pollen grains

Front 36

female reproductive site is comprised of ___

Back 36

carpel (pistil), stigma, style, ovary

Front 37

ovule holds a ___ cell

Back 37

diploid megaspore mother cell

Front 38

___ megaspores disentegrate, leaving one viable

Back 38

3

Front 39

megaspore will undergo mitosis to ultimately form the ___ sac that house the haploid egg cell

Back 39

embryo

Front 40

what are the differences between the phases in meiosis?

Back 40

prophase I- crossing over occurs
in the I phases, pair of chromosomes split; in the II phases, pairs of chromatids split

Front 41

the interval between meiosis I and meiosis II

Back 41

interkinesis

Front 42

what are the differences between meiosis and mitosis?

Back 42

-mitosis can occur in either haploid or diploid cells and is nessecary for cell production and growth
-meiosis occurs only in diploid cells and it role is to produce cells with a reduced number of chromosomes and shuffle the genetic material so an organism can reproduce sexually