Flashcards in Complementation Deck (23)
there can be many ___ at the same ___ and many ___ acting on the same ___
different alleles are indicated how?
2 homozygous individuals w/ different recessive alleles at the same locus will...
have heterozygous offspring with a recessive phenotype
often mutations at different loci can give....
identical or nearly identical phenotypes
suppose you have 2 recessive mutant strains w/ same phenotype. they could be due to...
mutations at the same locus
2 different loci acting on the same trait
double heterozygote offspring
2 individuals with recessive homozygotes at different loci can fix each other
how to tell if the mutation is caused by one locus or different loci?
offspring of the mutant phenotype caused by 2 mutations at the same locus...
will have the same mutant phenotype
offspring of the mutant phenotype caused by mutations at 2 different loci...
will be wild type
when 2 recessive homozygotes produce wild-type offspring
when complementation occurs how many loci are involved?
noncomplementation is when the offspring...
look like the recessive parents
alleles at the same locus are called
mutations that don't complement eachother
mutants lying within the same cistron (noncomplementation group)
mutant screen asks
how many different loci are involved when all these lines have the same phenotype?
how to do a mutant screen?
mutate many flies (make grandchildren homozygous by inbreeding)
keep looking for same recessive phenotype
multiple traits caused by the same gene
one mutation w/ multiple effects
examples of pleiotropy
does the effect show up at all?
how much does it show up? is it mild or severe?
the effect of alleles of one gene may depend on the alleles of another gene
multiple loci working together to control a trait
ex. mouse fur color