L26 Population genetics: variation in space and time

Question 1 of 7

1

Allele frequencies in a ❌ remain ❌ over time unless acted upon by evolutionary ❌.

Drag and drop to complete the text.

population

constant

forces

Explanation

Question 2 of 7

1

Which of these is not an assumption of the Hardy-Weinberg equilibrium?

Select one of the following:

Large population size
No natural selection
No mating
No mutations
No migration

Explanation

Question 3 of 7

1

The frequency of alleles can be calculated by:

Select one of the following:

p + q = 100
p + q = 1
p^2 + 2pq + q^2 = 1
p^2 + pq + q^2 = 100

Explanation

Question 4 of 7

1

The genotypic frequency can be calculated by:

Select one of the following:

p^2 + pq + q^2 = 1
pq^2 + 2pq + q^2 = 1
p^2 + 2pq + q^2 = 1
p1^2 + p + q = 1

Explanation

Question 5 of 7

1

1 in 2500 children are born with the recessive disease cystic fribrosis. What proportion of the population are carriers of this disease?

Select one of the following:

0.0004
0.02
0.98
0.0392

Explanation

Question 6 of 7

1

Genetic drift is a change in allele ❌ due to random, ❌ natural selection events.

Drag and drop to complete the text.

frequencies

non

Explanation

Question 7 of 7

1

Stabilising selection ❌ variation but ❌ change the mean. Directional selection ❌ the mean value toward an ❌. Disruptive selection ❌ the two extremes, and often leads to ❌.

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reduces

increases

doesn't

extreme

changes

favours

speciation

extinction

	Created by Mer Scott about 7 years ago

• Calculate genotype frequencies using Hardy-Weinberg equilibrium. • Identify that random genetic drift occurs rapidly in small populations. • Explain how populations evolve over time in response to selection.

L26 Population genetics: variation in space and time

L26 Population genetics: variation in space and time

Question 1 of 7

Allele frequencies in a ❌ remain ❌ over time unless acted upon by evolutionary ❌.

Drag and drop to complete the text.

Explanation

Question 2 of 7

Which of these is not an assumption of the Hardy-Weinberg equilibrium?

Select one of the following:

Explanation

Question 3 of 7

The frequency of alleles can be calculated by:

Select one of the following:

Explanation

Question 4 of 7

The genotypic frequency can be calculated by:

Select one of the following:

Explanation

Question 5 of 7

1 in 2500 children are born with the recessive disease cystic fribrosis. What proportion of the population are carriers of this disease?

Select one of the following:

Explanation

Question 6 of 7

Genetic drift is a change in allele ❌ due to random, ❌ natural selection events.

Drag and drop to complete the text.

Explanation

Question 7 of 7

Stabilising selection ❌ variation but ❌ change the mean. Directional selection ❌ the mean value toward an ❌. Disruptive selection ❌ the two extremes, and often leads to ❌.

Drag and drop to complete the text.

Explanation