3.4.4 Gentetic Diversity And Adaptation

Question 1

The given example of directional selection

Answer 1

Antibiotic resistance

Question 2

Given example got stabilising selection is…

Answer 2

Human birth weights

Question 3

What does natural selection result in

Answer 3

Species that are better adapted to their environment
These may be anatomical, physiological or behavioural

Question 4

The 4 ways to compare genetic diversity between or within species

Answer 4

.frequency of measurable or observable characteristics

.base sequence of DNA

.the base sequence of mRNA

.the amino acid sequence of the proteins encoded by DNA and mRNA

Question 5

Courtship behaviour is…

Answer 5

A necessary precursor to successful mating

Question 6

What is species richness

Answer 6

Measure of the number of different species in a community

Question 7

What does an index of diversity show

Answer 7

The relationship between the number of species in a community and the number of individuals in each species

Question 8

What reduces biodiversity

Answer 8

Farming techniques