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look seeing that when White and Black bred the resultants were black which shows that BLACK is the dominant allele...Can you please Explain again? Shouldn't it be B or something? Thnx in advance again to spidey and snoo!
so it clearly puts out that white cant be Heterozygous cuz recessive alleles only show their effect in the absence of dominant allele
now remains B and C
now have a look when B and A bred solutions were all black
just a quick diagram
bb BB
Bb Bb Bb Bb
so all black and now white..
when C and D bred
Bb Bb bb bb
so you can deduce from here that D had bb
and C had Bb
so C is heterozygous!