chapter twenty Flashcards

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1
Q

budding or cell division of ______ organisms makes ______ clones of the parent

A

unicellular, identical

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2
Q

sexual reproduction mixes the genetic information of _____ individuals, making a genetically ____ individual

A

two, unique

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3
Q

organisms are typically _____, each cell have _ sets of chromosomes (paternal and maternal)

A

diploid (2n) , 2

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4
Q

gametes are _____

A

haploid

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5
Q

_____ _____ are in effect used to carry and propogate the germ line (gametes)

A

somatic cells

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6
Q

_______ produces the gametes that combine in a new zygote, which divides producing ___ ____ and the ___ ___

A

meiosis, somatic cells and the germ line

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7
Q

variants of a gene called _____ are found in a population of individuals

A

alleles

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8
Q

involves one round of DNA replication followed by two rounds of cell division

A

meiosis

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9
Q

cell division in germ line

A

meiosis

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10
Q

meiosis ends in ___ ___ ___

A

4 haploid cells

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11
Q

mitosis ends in ___ ____ ___

A

two diploid cells

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12
Q

pairing of homologous chromosomes in meiosis produces a structure called a _______

A

bivalent

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13
Q

all four sister chromatid associate together in a _____ _____

A

synaptonernal complex

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14
Q

within _____ homologous recombination occurs

A

bivalents

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15
Q

____ _____ mixes alleles and produces genetic variation

A

homologous recombination

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16
Q

crossover events produce a ______

A

chiasma

17
Q

_______ must be resolved before segregation of the maternal and paternal chromatid pairs

A

chiasmata

18
Q

homologous recombination happens when

A

meiosis I