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Biology 1020 > sexual life cycles > Flashcards

sexual life cycles Flashcards

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1
Q

in asexual reproduction _____

A

a single individual passes genes to its offspring without fusion of gametes

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2
Q

clone

A

a group of genetically identical individuals from the SAME parent

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3
Q

in sexual reproduction offspring

A

having unique combinations

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4
Q

what reproduction maintains genetic variation

A

sexual reproduction

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5
Q

what are KEY for indicating sexual reproduction

A

meiosis and fertilization

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6
Q

advantages of asexual reproduction

A
  1. guarantee to pass on genetics
  2. safer - not looking for a mate
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7
Q

advantage of sexual reproduction

A

genetic variation

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8
Q

disadvantages of sexual reproduction

A
  1. may not find a mate
  2. mate could eat you after
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9
Q

life cycle

A

generation to generation sequence of stages in reproductive history of an organism

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10
Q

meiosis

A

diploid stage (2n) to haploid stage (n)

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11
Q

mitosis

A

haploid (n) to haploid (n)
diploid (2n) to diploid (2n)

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12
Q

fertilization is also known as

A

syngamy and fusion

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13
Q

what is the opposite of meiosis

A

fertilization (n + n = 2n)

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14
Q

what is a zygote

A

single cell that is diploid

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15
Q

is there a ploidy change in mitosis

A

NO

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16
Q

what is common to ALL sexually reproducing organisms

A

meiosis and fertilization

17
Q

three main types of sexual life cycles differ in their

A

timing of meiosis and fertilization

18
Q

life cycle for animals and some algae

A

gametic meiosis

19
Q

what does meiosis make in gametic meiosis

A

gametes

20
Q

what is the multicellular stage in gametic meiosis

A

diploid

21
Q

number of mitotic events in gametic meiosis

A

ONE

22
Q

true or false
fertilization does not always make a zygote

A

FALSE - it always does

23
Q

life cycle of plants and some algae

A

sporic meiosis/alternation of generation

24
Q

what does meiosis make in sproic meiosis

A

spores

25
Q

what is the multicellular stage in sporic meiosis

A

both haploid and diploid

26
Q

what does meiosis produce in sporic meiosis

A

spores

27
Q

how many mitotic events are in sporic meiosis

A

3

28
Q

what ALWAYS follows fertilization

A

the creation of a single cell zygote

29
Q

how does a zygote become a diploid multicellular organisms in sporic and gametic meiosis

A

mitosis

30
Q

fungi and some algae under go _____ reproduction

A

zygotic meiosis

31
Q

meiosis produces ____ in zygotic meiosis

A

spores

32
Q

the multicellular stage in zygotic meiosis is

A

haploid

33
Q

how many mitotic events are in zygotic meiosis

A

2

34
Q

what is the ONLY diploid stage in zygotic meiosis

A

zygote

35
Q

what do ALL sexual life cycles have in common

A
  1. meiosis
  2. fertilization
  3. gametes

Biology 1020 (29 decks)

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