Biology Le6

Question 1

Define the term mutation

Answer 1

A mutation is a random change to genetic material

Question 2

Give two examples of mutagenic agents

Answer 2

Radiation and Chemicals

Question 3

Varation is importatnt within a species because..

Answer 3

It makes it possible for a population to devolve over time

Question 4

The stages of natural selection are …

Answer 4

Species produce more offspring than the enviroment can sustain.
Natural selection or survival of the fittest occurs whe there are selection pressures.

Question 5

Mutations can be classed as..

Answer 5

Neutral, Advantage, Disadvantage

Question 6

The steps of speciation are..

Answer 6

-isolation
-Mutation
-Natural selection
-Reunited with family

Question 7

Biological definiton of species

Answer 7

A species is a group of organisms that are able to interbreed and produce fertile offspring

Question 8

Give two types of isolation barrier

Answer 8

Temporal isolation and Ecological isolation

Question 9

Are mutations spontanious?

Answer 9

yes! and they are the only source for new alleles

Question 10

What is adaptation

Answer 10

Adaptation is new alleles produced by mutation and can result in plants or animals becoming better adapted to their enviroment

Question 11

What is natural selection?

Answer 11

Survival of the fittest