You are given three homozygous strains of siamese fighting fish with different p
ID: 314224 • Letter: Y
Question
You are given three homozygous strains of siamese fighting fish with different phenotypes (blue, red #1, red #2). You make crosses, with the results shown below (reciprocal crosses give the same results).
parents offspring
blue x red #1 all green
blue x red #2 ½ blue ½ green
green F1 x green F1 91 green 29 blue 42 red
What is the genotype of the original red #1 parent?
R/R; B/B
R/R; B/b
R/R; b/b
r/r; b/b
none of the above
A.R/R; B/B
B.R/R; B/b
C.R/R; b/b
D.r/r; b/b
E.none of the above
Explanation / Answer
some information is missing but assuming homozygous monohybrid cross, the genotype should be
original parents
c. R/R; b/b
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