Meiosis and Sexual Reproduction Flashcards

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1
Q

checkpoint

A

can block progression through cell cycle if not met

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2
Q

cyclin

A

made constantly when out of mitosis but when the cell enters mitosis it disappears; when a threshold for enough cyclin is reached mitosis begins

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3
Q

cyclin dependent kinase

A

binds to cyclin to create active MPF which is necessary for mitosis

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4
Q

transformation

A

specialized channels take DNA from outside which then gets incorporated into chromosomes

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5
Q

pili

A

long extensions of membrane in bacteria

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6
Q

plasmid

A

parts of chromosomes passed on during transformation

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7
Q

homologous chromosomes

A

not identical, each is inherited during fertilization from a different haploid gamete; have same genes in same regions but can have dif alleles

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8
Q

haploid (1n)

A

cells only have one of each homolog

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9
Q

diploid (2n)

A

cells have pairs of homologous chromosomes

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10
Q

gamete

A

haploid cells that are passed on (egg, sperm)

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11
Q

zygote

A

haploid cells after fertilization (now diploid)

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