7.2 POPULATIONS Flashcards
1
Q
What is a population?
A
A group of organisms of the same species that occupy a space at any one time.
2
Q
What is the gene pool?
A
All the alleles of all the genes in the populations.
3
Q
What is allelic frequency?
A
The number of times an allele appears in the gene pool.
4
Q
What does the Hardy-Weinberg principle show?
A
The predictions of allelic frequency.
5
Q
What assumptions does the Hardy-Weinberg principle make?
A
- No mutations
- Population is isolated
- Population is large
- Allelic frequency doesn’t change between generations.
6
Q
What is the equation for recessive & dominant alleles?
A
p + q = 1
p = freq of recessive allele q = freq of dominant allele
7
Q
What is the equation for diploid allelic frequencies?
A
p² + 2pq + q² = 1
p² = homozygous recessive q² = homozygous dominant 2pq = heterozygous
