Chapter 13 Flashcards
0
Q
Codon
A
3 nucleotides
Code for amino acids and proteins
1
Q
What is the ultimate source of genetic variation?
A
Mutation
2
Q
Point mutation
A
A substitution in one of the nucleotides in codon
3
Q
Silent mutation
A
Has no consequences for fitness
4
Q
What is genetic variation maintained by?
A
Mutation
Migration
Environmental variation
5
Q
Frequency dependent selection
A
Fitness of each allele depends on its frequency in the pop
6
Q
Hardy Weinberg law
A
The frequencies of alleles and genotypes will remain constant fro, generation to generation if
- large number of individuals
- random mating
- no natural selection
- no mutation
- no migration
7
Q
Hardy Weinberg equilibrium
A
P+Q=1
8
Q
Inbreeding depression
A
Reduction of fitness of offspring
Can lead to expression of deleterious recessive alleles
