6.2.1 variation Flashcards
1
Q
what is variation
A
differences between individuals of the same species
2
Q
what is phenotypic variation
A
difference in feature
3
Q
how can phenotypic variation be caused
A
genetics or environmental
4
Q
examples of genetic variations inside humans
A
blood group
eye colour
gender
ability to roll tongue
free or fixed earlobes
5
Q
what is meant by environmental variation
A
climate, diet, accidents, culture and lifestyle
6
Q
genetic causes example
A
tall parents, children have potential to be tall
7
Q
environmental causes example
A
if they have a poor diet then then they will not grow very well
8
Q
where do genetic variants arise from
A
mutations
9
Q
what can the new allele from mutation do
A
give survival advantage
