7.3 Natural Selection

Question 1

What do most organisms produce?

Answer 1

Large numbers of offspring

Question 2

Why do organisms show variation?

Answer 2

Because of differences in their genes

Question 3

What do all the organisms in a population compete for?

Answer 3

Water, food, mates, territory, shelter from predators

Question 4

What will the organisms most suited to their environment do better? (the fittest)

Answer 4

Survive

Question 5

What is an example of how an organism may be best suited to their environment?

Answer 5

If they are camouflaged, best eyesight to find food, strongest and quickest etc

Question 6

The organisms which survive are most likely to…?

Answer 6

Breed successfully

Question 7

What are the key words you must use when describing the process of natural selection?

Answer 7

Mutation, variation, best adapted, survive, breed, pass on genes to offspring

Question 8

What is a mutation?

Answer 8

When a gene accidentally changes and becomes a new form of a gene

Question 9

What will happen to a mutated gene if it is advantageous?

Answer 9

It will be passed on to the offspring