Fur colour in jackalopes can be cream, yellow, brown or black. In separate cross
ID: 312446 • Letter: F
Question
Fur colour in jackalopes can be cream, yellow, brown or black. In separate crosses of true-breeding parents, we obtained the following data.
Cross P1 parents F1 offspring F2 offspring
A Black x brown All black 3/4 black; 1/4 brown
B Yellow x brown All black 9/16 black; 3/16 brown; 3/16 yellow; 1/16 cream
C Black x yellow All black 3/4 black; 1/4 yellow
a) Based upon the data, how many genes control coat colour? Briefly explain your answer.
b) Create genetic symbols for these gene(s) and their alleles, and indicate the genotypes of the parents in the P1 generation for each of the crosses (A-C) above.
Explanation / Answer
Answer:
1).Two genes with four alleles (each two alleles) control the color of the fur
A_B_ = Black
A_bb = Brown
aaB_ = Yellow
aabb = Cream
2)
A ) Black x brown = F1- All black 3/4 black; 1/4 brown
AABB x AAbb AABb & AaBb
Black x brown (AABB x AAbb) Yellow x brown (aaBB x AAbb) Black x yellow (AABB x aaBB)Related Questions
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