B 13 Flashcards
1
Q
Natural selection
A
Organisms that gain an advantage are more likely to survive and breed
2
Q
Mutation
A
Is a change in DNA code when cells divide, thus creating new variants and phenotypes.
3
Q
Steps of natural selection
A
Mutation of gene- advantage to survival- breed- pass on genes
4
Q
Selective breeding
A
Is a process where humans breed plants and animals for desired characteristics.
5
Q
Examples of desired characteristics
A
Disease resistance, increased food production, dogs with gentle nature and heavily scented flowers
6
Q
Problems with selective breeding
A
Lack of variation
7
Q
Variation
A
Is the differences in the characteristics of individuals in a populations
8
Q
Genetically Modified Crops
A
Had their genes modified. Normally resistant to diseases and have a higher yield.
