Variation

Question 1

What is the mechanism behind evolution?

Answer 1

Natural selection by survuval and reproduction of the fittest individuals to their environment

Question 2

Variation

Answer 2

Differences in phenotype of an organism

Question 3

Discrete variation

Answer 3

Qualitative variation such as colour

Question 4

Continuous variation

Answer 4

Quantitative variation such as height and weight

Question 5

Causes of genetic variation

Answer 5

Independent assortment and crossing over in meiosis

Random gamete combination during fertilisation

Spontaneous gene mutation

Question 6

Environmental variation

Answer 6

Usually responsible for continuous variation

Environmental conditions restricting or enhancing growth