Factors Affecting Genetic Variation

Question 1

Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation.

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Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation.: Genetic drift; Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation.: Both; Complete the T-chart by categorizing each statement as something that would most likely be relevant to gene flow or genetic drift. Some answers will fit in both columns depending on the situation.: Gene flow

Question 2

Disasters Increase✔ DecreaseBoth

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✔ Decrease

Question 3

Increased food source ✔ IncreaseDecreaseBoth

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✔ Increase

Question 4

Complete the T-chart by categorizing each environmental factor as something that would most likely increase or decrease genetic variation. Some answers will fit in both columns depending on the situation.

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Complete the T-chart by categorizing each environmental factor as something that would most likely increase or decrease genetic variation. Some answers will fit in both columns depending on the situat: Decrease; Complete the T-chart by categorizing each environmental factor as something that would most likely increase or decrease genetic variation. Some answers will fit in both columns depending on the situat: Increase

Question 5

Read each example and identify it with one of the mechanisms that influence gene pools.

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✔ gene flow; Read each example and identify it with one of the mechanisms that influence gene pools.: gene flow; Read each example and identify it with one of the mechanisms that influence gene pools.: natural selection; Read each example and identify it with one of the mechanisms that influence gene pools.: mutation; Read each example and identify it with one of the mechanisms that influence gene pools.: genetic drift

Question 6

mutationgene flowgenetic drift✔ natural selection Competition for sunlight leads to taller trees.

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✔ natural selection

Question 7

✔ mutationgene flowgenetic driftnatural selection The DNA of a snake changes to make its venom stronger.

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✔ mutation

Question 8

mutationgene flow✔ genetic driftnatural selection A grassfire randomly sweeps through a population of buffalo and kills most of the animals.

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✔ genetic drift

Question 9

Read each example and decide what the resulting effect on the gene pool of that population would be.

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✔ brings new alleles from other populations; Read each example and decide what the resulting effect on the gene pool of that population would be.: brings new alleles from other populations; Read each example and decide what the resulting effect on the gene pool of that population would be.: favors certain alleles; Read each example and decide what the resulting effect on the gene pool of that population would be.: creates new alleles from DNA; Read each example and decide what the resulting effect on the gene pool of that population would be.: randomly selects alleles

Question 10

creates new alleles from DNAbrings new alleles from other populationsrandomly selects alleles✔ favors certain alleles Competition for sunlight leads to taller trees.

Revolt · Accepted Answer

✔ favors certain alleles

Factors Affecting Genetic Variation Answers

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