The L gene in guinea pigs controls hair length. The dominant allele L governs sh
ID: 64997 • Letter: T
Question
The L gene in guinea pigs controls hair length. The dominant allele L governs short hair, while the recessive allele l governs long hair. Hair color is specified by a second gene C that has codominant alleles, such that CYCY = yellow, CYCW = cream, and CWCW = white. Two short/ cream-haired pigs (Ll CYCW) are crossed. Assuming independent assortment, predict the phenotypic ratio in the progeny of this cross for long cream animals.
*****The answer that I got was 2/16 but we have to put it in decimal form which was 0.125. I just need to know if I did it correctly*****
Explanation / Answer
L-short hair, dominant over l=long hair
CYCY=yellow; CYCW= cream; CWCW=white
Short/cream X Short/cream
Ll CYCW Ll CYCW
LCY
LCW
lCY
lCW
LCY
LLCYCY (short/yellow)
LLCYCW (short/cream)
LlCYCY (short/yellow)
LlCYCW (short/cream)
LCW
LlCYCW (short/cream)
LLCWCW (short/white)
LlCYCW (short/cream)
LlCWCW (short/white)
lCY
LlCYCY (short/yellow)
LlCYCW (short/cream)
llCYCY (long/yellow)
llCYCW (long/cream)
lCW
LlCYCW (short/cream)
LlCWCW (short/white)
llCYCW (long/cream)
llCWCW (long/white)
short/yellow : short/cream : short/white : long/yellow : long/cream : long/white)
3: 6 : 3 : 1: 2 : 1
long cream animals: 2/16
LCY
LCW
lCY
lCW
LCY
LLCYCY (short/yellow)
LLCYCW (short/cream)
LlCYCY (short/yellow)
LlCYCW (short/cream)
LCW
LlCYCW (short/cream)
LLCWCW (short/white)
LlCYCW (short/cream)
LlCWCW (short/white)
lCY
LlCYCY (short/yellow)
LlCYCW (short/cream)
llCYCY (long/yellow)
llCYCW (long/cream)
lCW
LlCYCW (short/cream)
LlCWCW (short/white)
llCYCW (long/cream)
llCWCW (long/white)
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