Sexual rep. quiz Flashcards

1
Q

gamete

A

sex cells (sperm + egg)

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2
Q

How many chromosomes does the head of sperm contain?

A

23

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3
Q

how many chromosomes does the nucleus of an egg contain?

A

23

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4
Q

what cell division produces sex cells?

A

meiosis

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5
Q

zygote

A

fertilized egg cell

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6
Q

how many chromosomes are in a zygote

A

46

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7
Q

as soon as the zygote starts growing/dividing it is called an…

A

embryo

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8
Q

what type of cell division occurs during cleavage?

A

mitosis

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9
Q

what body cells don’t have 46 chromosomes?

A

sex cells

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10
Q

morula/…

A

ball of cells

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11
Q

how many cells make up morula stage?

A

32

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12
Q

how many divisions are required to produce an embryo?

A

5

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13
Q

How do you go from a zygote to a multicellular organism?

A

mitosis

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14
Q

Aquatic fertilization

A

external

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15
Q

aquatic development

A

external

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16
Q

do aquatic animals give parental care?

A

no

17
Q

terrestrial development

A

external or internal

18
Q

terrestrial fertilization

A

internal

19
Q

what does meiosis do to chromosome #?

A

reduces by half

20
Q

fertilization

A

combining of egg and sperm

21
Q

what does fertilization produce?

A

a zygote

22
Q

cleavage

A

increase in cell # rapidly

23
Q

differentiation

A

cells getting their “job” by processing different parts of DNA

24
Q

in what sex organs are gametes produced?

A

testes and ovaries

25
Q

female sex hormone

A

estrogen

26
Q

male sex hormne

A

testosterone

27
Q

what do sex hormones produce?

A

secondary sex characteristics

28
Q

females produce an egg about every ___ days

A

28

29
Q

where are eggs produced?

A

ovaries

30
Q

Where does the fertilized egg develop?

A

uterus