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20 Cards in this Set

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mitosis

-cellular reproduction (process of making new cells)


-asexual reproduction


-the only way eukaryotic cells can reproduce asexually


-replace, repair, reenerate

asexual reproduction

-cell makes identical copies of themselves with involvement of another cells

eukaryotic cells

-cells that make up human body


-nucleus, cellular organelles, chromosomes

chromosomes

-instructions for cells

meiosis

-sexual reproduction to perpetuate species


-female - eggs (ova)


-make - sperm, gametes (配偶子)





total numbers of chromosomes

-46


-23 pairs

sex chromosome

-23rd pair of chromosomes

XX

female

XY

male

gonads

-primary sexual organ


-testes and ovaries

fertilization

-gametes unite and combine their genetic material (=sexual reproduction)


-fertilized egg (zygote) has 46 chromosomes

zygote

fertilize - inplant

embryo

inplant - up to 9 weeks

fetus

after 9 weeks - delivery


neonate (new born)

birth - up to 20 days

infant

20 days - 1 year

toddler

1 - 3 years

genitalia

-reproductive organ

primary genitalia

-gonads that produce gametes


-testes and ovaries

secondary genitalia

-other structures that aid in reproductive process