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Biology > mitosis and meiosis > Flashcards

mitosis and meiosis Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

how many humans have

A

body cells: 46 sex cells: 23

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2
Q

what’s interphase in meiosis

A

before meiosis only happens once duplicates in the chromosomes

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3
Q

how many times does meiosis divide

A

two

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4
Q

what happens in prophase one

A

chromosomes condense and cross over

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5
Q

what is reduction division

A

The way meiosis happens because the number of chromosomes for the species is cut in half

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6
Q

her body cells haploid or diploid

A

diploid

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7
Q

what happens in metaphase one

A

tetrads lined up along equator

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8
Q

what happens in anaphase one

A

Homelogous just pairs separate and moving to opposite poles

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9
Q

what happens in Tele phase 1

A

cytoplasm divides to separate the double-stranded chromosomes

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10
Q

what happened to ProPhase 2

A

xNew spindles appear chromosomes begin to move

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11
Q

how are egg and sperm cells produced

A

Gameogenesis

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12
Q

where are gametes formed

A

in the gonads

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13
Q

what’s the male and female gonads

A

female: ovaries male: testes

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14
Q

what does spermatogenesis produce

A

for sperm cells of equal size

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15
Q

what is oogenesis

A

One large egg and three polar bodies

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16
Q

what are the characteristics of the sperm

A

Head with flagella, mobile, .05 mm in diameter

17
Q

One of thecharacteristicsof an egg

A

round shape, non-mobile, .10 mm in diameter

18
Q

parthenogenesis

A

development of an unfertilized egg into an adult without fertilization

19
Q

what is the result of fertilization

A

A diploid zygote

20
Q

external fertilization

A

give me tonight outside the body of the female produces lots of eggs because of low survival rate

21
Q

internal fertilization

A

Gammy tonight inside the body of the female produced one or a few eggs because of high survival rate

22
Q

what’s meiosis

A

The making of sperm and egg cells

23
Q

how do bacteria reproduce

A

asexually

24
Q

can reproduction take place if the male or female does not mature

A

no

25
Q

what are the faces of mitosis

A

interphase prophase metaphase anaphase and telophase

26
Q

does the nucleus divides evenly in budding

A

no

27
Q

creating new life is called

A

reproduction

28
Q

what happens during crossing over and what is the significance

A

The chromosomes cross and share information and itincreases generic diversity

29
Q

what is it mean to be homologous

A

to have the same size same shape and same jeans

30
Q

what is cell division

A

The process a cell goes through to duplicate itself

Biology (10 decks)

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