Evolution

Question 1

What are the three pre-conditions for evolution by natural selection to occur?

Answer 1

1. Heritable Characters
2. Characters vary between individuals
3. Different levels of fitness for different characters

Question 2

Define EVOLUTION

Answer 2

A change in allele frequencies over time in a population

Question 3

What are the two types of imperfections discussed in Lec1?

Answer 3

Vestigial Traits and ‘Bad Design’

Question 4

What is the main example of Bad Design discussed in Lec1?

Answer 4

The Left Recurrent Laryngeal Nerve

Question 5

Define BIOGEOGRAPHY

Answer 5

The (study of) distribution of species around the world

Question 6

What is Hamilton’s Rule (Prob Set Definition)

Answer 6

An expression that predicts when altruism should be favoured

Question 7

Define Genetic Drift

Answer 7

A change in the frequency of an allele in a population due to random sampling of which individuals pass on their genes

Question 8

Define Inclusive Fitness

Answer 8

Fitness due to an individuals own reproductive success plus the reproductive success of its relatives

Question 9

Define Polyandry

Answer 9

A mating system in which some females mate with more than one male

Question 10

Are bird legs and insect legs homologous or analogous?

Answer 10

Analogous

Question 11

Are human thumbs and panda thumbs homologous or analogous

Answer 11

Analogous

Question 12

Are dorsal fins in porpoise and salmon homologous or analogous?

Answer 12

Analogous

Question 13

Are human arms and bat wings homologous or analogous?

Answer 13

Homologous