Someone tried to answer it yesterday but I'm still not sure
A creature has colorful shells and stores sucrose in its body. Two purebred strains of it are obtained. The first is dark brown with all dark brown progeny and the second is green with all green progeny. He crossed them to produce heterozygotes. When he crossed the heterozygotes, the 32 offspring were:
18 dark brown, 6 red, 6 green, 2 yellow
1) How many pairs of genes (not alleles) control shell color?
2) Write genotypes of parents and draw Punnett square for cross between heterozygotes.
Ok, I think it is 2 pairs but not sure...
Also, I am not sure what the parents would be and what each genotype in the square represents....big help needed.
2007-03-27
08:47:33
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2 answers
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asked by
Anonymous