Topic 14- Variation

Question 0

Examples of genetic variation are;

Answer 0

Eye colour
Hair colour
Flower colour
Free ear lobes etc

Question 1

What causes variations?

Answer 1

Genetic and enviromental

Question 2

Examples of environmental variation are;

Answer 2

Scars
Piercings
Hair style
Stunted growth in plants etc

Question 3

What is continuous variation?

Answer 3

Where an individual can be at any point along a rang of variation. Example, height can range from the smallest to the tallest person in the world

Question 4

What is discontinuous variation?

Answer 4

Distinct categories of variation. For example blood groups

Question 5

What is asexual reproduction?

Answer 5

There is only one parent so the offspring are genetically identical. They are called clones

Question 6

Reproduction increases variation. Why does this benefit humans?

Answer 6

If the environment changes, there will be a variety which will enable us to adapt to new enviroments

Question 7

What is the process of new genes appearing?

Answer 7

Mutation

Question 8

How is mutation caused?

Answer 8

Exposure to ionising radiation