lecture 9: variation of theme I Flashcards
1
Q
loss-of-function mutaton
A
reduces allelic function
2
Q
gain-of-function mutation
A
enhance allelic function
3
Q
neutral mutation
A
the gene product no change to phenotype
4
Q
incomplete dominance
A
the phenotype of F1 hybdrigs is somewhere between the phenotypes of the two parental varieties
5
Q
codominance
A
two dominant alleles both affect the phenotype, but in separate, distinguishable ways
* ex: blood type
6
Q
epistasis
A
expression of one gene masks/modifies effect of another gene pair
* gene masks phenotypic effects of another gene
7
Q
Bombay phenotype
A
arises from a rare mutation in FUT1
* H substance incompletely formed
* result in adequate substate for enzyme
