3.6 MUTATIONS

Question 1

Mutation

Answer 1

A random change in a DNA sequence that can make an organism advantageous or disadvantagous to survival

Question 2

Adaptation

Answer 2

An adaptation is an inherited characteristic that makes an organism well suited to survival in its environment/niche.

Question 3

Speciation

Answer 3

Speciation is the evolution of new species.

Question 4

Factors that increase the rate of mutation

Answer 4

Radiation
Some chemicals

Question 5

Alleles

Answer 5

makes plants and animals better adapted to their environment

Question 6

Variation

Answer 6

Makes it possible for an organism to evolve over time in response to changing environmental conditions

Question 7

Natural selection

Answer 7

The best adapted individuals in a population survive to reproduce passing on the favourable allele that has the selective advantage

Question 8

Isolation barriers

Answer 8

Geographical
● Ecological
● Behavioural