Natural Selection

Question 1

How are selection coefficients calculated?

Answer 1

Difference between the fitness of the standard and the relative fitness of the genotype in question

Question 2

Which gene determins coat colour in rock-pocket mice?

Answer 2

MC1R

Question 3

Is dark or light dominant in rock pocket mice?

Answer 3

Dark

Question 4

What type of selection has driven the dark allele to high frequencies in rock pocket mice?

Answer 4

Positive selection

Question 5

What enzyme does HIV make?

Answer 5

Reverse transcriptase

Question 6

What does the 3TC drug do?

Answer 6

Interferes with normal reverse transcriptase which prevent HIV reproduction

Question 7

How long did it take for HIV to become immune to 3TC?

Answer 7

4 weeks

Question 8

What is the generation time for HIV?

Answer 8

2.5 days

Question 9

What accelerates drug resistance in HIV?

Answer 9

Recombination

Question 10

What is balancing selection?

Answer 10

A form of natural selection

When heterozygotes are fitter than homozygotes

Question 11

What is kuru?

Answer 11

A prion disease

Spread by consumption of prion infected meat