Chapter 13.2 review PP Flashcards

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1
Q

Modern humans descended form where?

A

Africa

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2
Q

not independent evolutionary groups

A

human races

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3
Q

No single allele is found in all (or even most) populations of a defined race and not found in other races.

A

True

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4
Q

Small number of SNPs identified as unique to a particular human group

A

True

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5
Q

Never found in all populations of the race

A

SNPs

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6
Q

Never within every individual in a population

A

SNPs

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7
Q

Genetic evidence that human racial groups are not biological races.

A

True

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8
Q

Allele frequencies are not more similar within racial groups than between racial groups.

A

True

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9
Q

The distribution of alleles within racial groups is about the same as between racial groups.

A

True

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10
Q

More variability exists within a race than average differences among races.

A

True

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11
Q

traits shared by unrelated populations due to similarities of environment

A

Convergent evolution

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12
Q

Similar shapes in dolphins and sharks is an example of

A

convergent evolution

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13
Q

Skin color in humans is an example of

A

covergent evolution

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14
Q

Is there a strong correlation between skin color and exposure to UV light?

A

Yes

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15
Q

Fitness of skin color is related to what?

A

environment

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16
Q

change in allele frequency that occurs due to chance

A

genetic drift

17
Q

genetic drift occurs in three different situations

A
  1. Founder effect
  2. population bottleneck
  3. chance event s
18
Q

genetic differences resulting from a small sample

A

Founder effect

19
Q

genetic change resulting from a dramatic reduction of population numbers

A

Population bottleneck

20
Q

small populations are especially prone to loss of alleles through chance

A

Chance events