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Human Life Cycle - PowerPoint PPT Presentation


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Human Life Cycle. Multicellular diploid organism (2n). mitosis. meiosis. Unicellular diploid zygote (2n). Unicellular haploid cells (gametes) (n). fertilization. Meiosis – splitting chromosome pairs – 2n  n Mitosis – making exact copy. Protists / fungi / plants.

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human life cycle
Human Life Cycle

Multicellular diploid organism(2n)

mitosis

meiosis

Unicellulardiploid zygote(2n)

Unicellular haploid cells(gametes)(n)

fertilization

Meiosis – splitting chromosome pairs – 2n  nMitosis – making exact copy

protists fungi plants
Protists / fungi / plants

Multicellular diploid organism(2n)

sporophyte

mitosis

meiosis

Unicellular diploid zygote(2n)

Unicellular haploid cells(n)

(spores)

fertilization

Unicellularhaploid gametes(n)

mitosis

Multicellularhaploid organism(n)

gametophyte

mitosis

human life cycle3
Human life cycle

Multicellular diploid organism(2n)

mitosis

meiosis

Unicellulardiploid zygote(2n)

Unicellular haploid cells(gametes)(n)

fertilization

protists fungi plants4
Protists / fungi / plants

Multicellular diploid organism(2n)

mitosis

meiosis

Unicellular diploid zygote(2n)

Unicellular haploid cells(n)

(spores)

fertilization

Unicellularhaploid gametes(n)

mitosis

Multicellularhaploid organism(n)

mitosis

moss nonvascular plants
Moss(nonvascular plants)

sporophyte

gametophyte

gametophyte dominates

ferns seedless vascular plants
Ferns(seedless vascular plants)

sporophyte

sporophyte dominates

pine tree gymnosperms
Pine treeGymnosperms

tiny gametophyte inside cone

sporophyte

sporophyte dominates

sunflower angiosperms
SunflowerAngiosperms

tiny gametophyte inside bottom of flower

rest of plant = sporophyte

sporophyte dominates