B5.1.1 - Variation

Question 1

What is a phenotype?

Answer 1

The appearance of an organism

Question 2

What is variation?

Answer 2

The differences within a species

Question 3

What are the 2 causes of variation?

Answer 3

Genetic variation and environmental variation

Question 4

What is genetic variation?

Answer 4

Variation caused by an organism’s genetic material

Question 5

What is environmental variation?

Answer 5

Variation caused by the environment

Question 6

What are some example of characteristics caused by genetic variation?

Answer 6

Eye colour, blood group, presence of a genetic order

Question 7

What is continuous variation?

Answer 7

A variation which can take any value between a minimum and maximum

Question 8

What is discontinuous variation?

Answer 8

Characteristic which falls into distinct groups

Question 9

What are some examples of continuous variation?

Answer 9

Leaf surface area
Length of fur
Skin colour

Question 10

What are some examples of discontinuous variation?

Answer 10

Gender
Eye colour
Wrinkled or non-wrinkled seeds

Question 11

How is continuous variation shown?

Answer 11

By using a histogram but often the bars are removed and the lines is just showing

Question 12

How is discontinuous variation usually shown?

Answer 12

By using a bar chart