Unit 2: Multicellular Organisms

Question 1

Define variation

Answer 1

The genetic differences between individuals of the same species

Question 2

Examples of variation

Answer 2

-face shape
-eye shape
-hair type
-skin colour
-height

Question 3

What is discrete variation

Answer 3

The differences in characteristics controlled by one single gene (single gene inheritance)

Question 4

Examples of discrete variation

Answer 4

-fingerprints
-single gene
-dry and wet earwax
-ear lope shape
-long and short hair in cats
measurements in distinct groups

Question 5

What is continuous variation

Answer 5

The differences in characteristics controlled by more than one gene (also called polygenic inheritance)

Question 6

Examples of continuous variation

Answer 6

-height
-broad bean length
-measurements a range of values
polygenic
-skin colour