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Science Flashcards

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1
Q

Speciation

A

Is the tide of two or more species from one existing species

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2
Q

Intersexual selection

A

Males display certain traits to females

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3
Q

Genetic drift

A

Is a change in allele frequencies due to chance

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4
Q

Does genetic drift have a negative effect on a population

A

Yes

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5
Q

What is the founder effect

A

The founder effect is a genetic drift that occurs after start of new population

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6
Q

True or false:A population bottleneck can lead to genetic drift

A

True

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7
Q

True or false:Gene flow keeps neighboring populations similar

A

True

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8
Q

When does geographic occur

A

When physical barriers divide population

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9
Q

When does temporal isolation happen

A

When timing of reproductive periods prevents mating

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10
Q

When does genetic drift occur

A

When an event drastically reduces population size

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11
Q

True or false:Natural selection is not the only mechanism through which populations evolve.

A

True

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12
Q

Can temporal barriers cause isolation

A

Yes

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13
Q

Intrasexual selection

A

Competition among males

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14
Q

Does population become isolated when there is no gene flow

A

Yes

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15
Q

Emigration

A

Is the process of leaving a population

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16
Q

Can Populations become isolated in several ways

A

Yes

17
Q

When does gene flow occur

A

When individuals join new populations and reproduce

18
Q

Does Behavioral isolation includes different in courtship or mating behaviors

A

Yes

19
Q

When can reproductive isolation occur

A

Can occur between isolated populations; occurs when member of different populations connor mate successfully

20
Q

Can behavioral Barriers cause isolation

A

Yes

21
Q

Gene flow

A

Is the movement of alleles between populations

22
Q

What does genetic drift cause

A

A loss of genetic diversity and is most common in small populations

23
Q

Immigration

A

Is the process of joining a new population

24
Q

When does sexual selection occur

A

It occurs when certain traits increase mating success and occurs due to higher closet of reproduction for females

25
Q

Is it less or more likely to have some individuals that can adapt

A

Less

26
Q

True or false: harmful alleles can become more common due to chance

A

True

27
Q

What happened when you have a low gene flow

A

Increases the chance that two populations will evolve into different species

28
Q

True of false: the founding of a small population can lead to genetic drift

A

True

HISTORY (12 decks)

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