The L gene in guinea pigs controls hair length. The dominant allele L governs sh
ID: 64996 • 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 yellow animals.
*****The answer that I got was 1/16 but we have to put it in decimal form which was 0.0625. I just need to know if I did it correctly*****
Explanation / Answer
Yes, you are correct. Cross between Ll CYCW* Ll CYCW will have the offpsring with the following genotypes.
LL CYCY ---------> 1/16 (short, yellow)
LL CYCW ----------> 2/16 (short, cream)
LL CWCW ----------> 1/16 (short, white)
LI CYCY -------------> 2/16 (short, yellow)
LI CWCY --------------> 4/16 (short, cream)
LI CWCW ---------------> 2/16 (short, white)
II CYCY --------------> 1/16 (long. yellow)
II CWCY -------------> 2/16 (long, cream)
II CWCW -------------> 1/16 (long, white)
Thus, the number of offspring with long, yellow phenotype is, 1/16= 0.0625.
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