UNIT5- Reasons for variation EOY Flashcards
1
Q
Main 3 reasons for variation
A
Sexual reproduction,
Meiosis and mutation
2
Q
Sexual reproduction (Having two parents)
A
A fertilised egg has half the DNA from each parents creating offspring with a mix of characteristics from both parents.
3
Q
Meiosis (making sex cells)
A
When Gametes are made the genetic info is shuffled. Making the genes that are inherited from each parent randomised.
4
Q
Mutation
A
A random DNA change sometimes changing a characteristic.
Beneficial or harmful.
