Extension of Genetics quiz review Flashcards
1
Q
simple dominance/complete dominance
A
there is a dominant trait and if the dominant allele is present, it is the one shown in the organism
2
Q
Incomplete dominance
A
When a trait is mixed (heterozygous often)
(example: red and white make pink)
3
Q
codominance
A
when each of the traits show up together (not mixed)
4
Q
Epistasis
A
When one gene affects whether another is exposed
5
Q
X - linked
Y - linked
A
when a gene is only present in the x chromosome or the y chromosome
6
Q
Polygenic trait
A
when a trait is made up of two or more genes
7
Q
Polyallelic trait
A
when one gene is made up of two or more alleles
8
Q
Probability
A
In punnett square fraction of how much inside the square, double if there are several, multiply, numerous multiplication if different orders
9
Q
Steps to Hardy Weinberg Equilibrium
A
- Find frequency of the recessive individual (q^2)
- Find frequency of recessive allele (q) (√q^2)
- Find frequency of the dominant allele (p) (p+q=1)
- Find frequency of each genotype (p^2 + 2pq + q^2 = 1)
- see if frequencies change over time
