Youarestudyingrecessivemutationsintwounlinkedcelegansg

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Unformatted text preview: 
and
 both
give
rise
to
the
same
phenotype
when
mutated.
(e.g.
gene
1
is
required
for
growth
and
 gene
2
is
required
to
turn
on
gene
1)
 
 9:3:4

Two
genes
involved;
recessive
epistasis.
Gene
that
gives
rise
to
the
4x
phenotype
 when
homozygous
mutant
is
epistatic
when
both
genes
are
homozygous
mutant.
(e.g.
two
 genes
required
to
synthesize
intermediates
in
a
pigmentation
pathway)
 
 12:3:1

Two
genes
involved;
dominant
epistasis.
Gene
that
gives
rise
to
the
12x
 phenotype
is
epistatic
as
long
as
at
least
one
dominant
allele
is
present.
(e.g.
Gene1
shuts
 off
pigment
expression
as
long
as
one
functional
allele
is
present,
gene2
synthesizes
the
 pigment.)
 
 Pract...
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This note was uploaded on 04/05/2010 for the course MCB 104 taught by Professor Urnov during the Spring '09 term at University of California, Berkeley.

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