Variation Flashcards
1
Q
Two types of variation
A
Discrete and continuous
2
Q
Discrete variation
A
Discrete variation – can be divided up into distinct groups and is normally controlled by a single gene.
For example – pea seed colour Or ability to roll tong
3
Q
Continuous variation
A
Continuous variation - does not fall into distinct groups but flows from one extreme to the other and is controlled by alleles from more than one gene (polygenic inheritance).
E.g. weight, height, marbling on lean meats
4
Q
Environmental influences - discrete
A
Largely unaffected by environmental factors
5
Q
Environmental influences- continuous
A
Influenced by environment
