Natural Selection & Selective Breeding

In what forms can variation within a species exist?

i) environmental ii) genetic iii) a combination of both

1 of 7

Define mutation.

A rare, random change in genetic material that can be inherited.

2 of 7

Define evolution.

By means of natural selection - survival of the fittest.

3 of 7

Define resistance to antibiotics.

This can increase bacterial population.

4 of 7

Are mutations harmful, neutral or beneficial?

Many mutations are harmful. Some mutations are neutral. A few mutations are beneficial.

5 of 7

What increases the incidence of mutations?

Exposure to ionising radiation and some chemical mutations.

6 of 7

Why does selective breeding exist?

Desired genetic characteristics can be passed on, creating stronger, better & more profitable offspring.

7 of 7

Other cards in this set

Define mutation.

A rare, random change in genetic material that can be inherited.

Define evolution.

Define resistance to antibiotics.

Are mutations harmful, neutral or beneficial?

Get Revising