You are given three homozygous strains of siamese fighting f

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

Solution

some information is missing but assuming homozygous monohybrid cross, the genotype should be

original parents

c. R/R; b/b