/
I
6'
/
Fruit fly eye color is a sex-linJ<ed trait on
the X chromosome. Red eyes (R) is dominant
over
white eyes (r) in this typt
the cross of a red eyed female (heterozygous)
and a red
*H;vu
eyed male. What are the genotlpes of
theparents?
ornffii*
/
,,/
_+
,'/'
Xka
-;""/
/
How many are:
white eyed males?
white eyed females?
red eyed males?
red eyed females?
x" lxR\xY
7
'
I
_0
IL
In man' assume that spotted skin (s) is dominant
over non-spotted skin (s) and that wooly
hair
(w) is dominant over non-wooty irair (w). cross
u rrruoiug" uetween uiiiorygous
spotted,
a heterozvsous *oolv-huir"a,"o"-rpoued
woman. Give the prr"rot)rpi,
,oT,il#i$ffi;lth
?.. Ss*rw X ssNN
Su]
25"l- QuHeI stin i
zo'1.
qo*A
sYro
t
woo\1 ho\n
rtu"'wuo\q
hoir
2s'/. non.slo\,td i rr.im\V
zS'i.rron.slo$,tA t non.woo\y
S\i]
Str)
Sr.r)
8' ln horses, black is dependent upon a dominant gene, B, and.chestnut
upon its recessive allele, b.
The trotting gait is due to a dominant gene,
T, tle pacing gait to its rec'essive allele, t.
If a
is mated to a homozvgom
rrotter, what wilt be the ,ppl*ur..
$ffig,?x"rdllacer
?:
"rr"itout
Bbtt x bb-\t
-bt
bt
bt
bk
9'
A type AB man marries a type B woman whose
mother had type o blood. Show the possible
genotypes, phenotlpes and their probabilities
for
A 3,
?' ABx BD
B
\At)"
olAo\80
children the couple
I
I
,fi
cr
-uy t u*.
lL
nil I sol. s
'lt Bo
lz:'1. AB
'lq Ao I
'1,{- BD
zs'l.A