meiosis Flashcards

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1
Q

meiosis

A

cell division, which creates four daughter cells

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2
Q

haploid

A

cell containing one copy of each chromosome

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3
Q

diploid

A

cell containing two copies of each chromosome, maternal + paternal

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4
Q

haploid cells in human body

A

gametes, created through meiosis

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5
Q

gametes function

A

used in sexual reproduction, where gametes will fuse in a process called fertilization to create a zygote

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6
Q

meiosis function

A

allows creation of gametes, and therefore allows sexual reproduction

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7
Q

step 0 of meiosis: before cell division starts

A

parent cell replicates DNA

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8
Q

step 1 of meiosis

A

nuclear membrane breaks down and homologous chromosomes line up at equator of cell next to each other

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9
Q

step 2 of meiosis

A

fibres pull the chromosomes away from each other and to the poles of the cell

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10
Q

step 3 of meiosis

A

fibres pull the chromosomes away from each other and to the poles of the cell

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11
Q

step 4 of meiosis

A

cell membrane pinches apart the daughter cells

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12
Q

step 5 of meiosis

A

nuclear membrane breaks down and chromosomes move to center of cell

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13
Q

step 6 of meiosis

A

sister chromatids are pulled to poles of cell by fibres and separated

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14
Q

step 7 of meiosis

A

cell membrane pinches apart daughter cells

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15
Q

parent cells and daughter cells

A

parent cell carries different genetic information to daughter cells

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16
Q

fertilisation

A

a process occurring in sexual reproduction, when gametes fuse to create a zygote

17
Q

why are gametes haploid

A

when the gametes fuse, they will combine to give the resulting zygote two sets of genetic information, one paternal and the other maternal, therefore turning the zygote into a diploid cell with the correct no. of chromosomes