Lecture 8 - Extensions to Mendel's Rules, Cont., Cont. Flashcards
1
Q
How can the phenotype produced by the same genotype change depending on the environment?
What is the most common environmental factor that can affect expression of a phenotype?
L8 S33-35
A
Ex. Sex determination, nonfunction gene products in certain environments, etc.
The most common mechanism is temperature.
2
Q
What is a continuous characteristic?
L8 S36
A
A continuous distribution of phenotypes that occurs when there are many genes at different loci that affect the phenotype.
ex. skin color
3
Q
What is heterosis?
L8 S45
A
When a crossbred, heterozygote shows improvement in characteristics from pure breeding parents.
