meiosis Flashcards

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1
Q

karyotypes

A

chromosome pairs ordered by size and length

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2
Q

autosomes vs sex chromosomes

A

auto: do not determine sex (humans 22 pairs)

sex: eggs (X), sperm (X or Y)… 22 + X/Y

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3
Q

meiosis characteristics

A

forms gametes

2 divisions

results in 4 haploid cells

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4
Q

3 events in meiosis

A

prophase I

metaphase I

anaphase I

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5
Q

meiosis I

A

occurs after interphase

prophase I: homologous chromosomes pair to form tetrad, DNA is exchanged

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6
Q

metaphase I and anaphase I

A

meta: tetrads line up at metaphase plate

ana: pairs of homologous chromosomes seperate

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7
Q

telephase I and cytokinesis

A

nuclei and cytoplasm splits

no interphase after to decrease # of chromosomes

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8
Q

prophase II

A

no crossing over

spindle forms

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9
Q

metaphase II

A

chromosomes,es line up at the metaphase plate

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10
Q

anaphase II

A

sister chromatids separate and move towards opposite poles

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11
Q

telephase II & cytokinesis

A

4 haploid cells

each daughter cell is genetically unique

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