I am having some difficulties with some punnet squares, and I'd like some help.
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1. A tall (Tt) red flower (RR) plant is crossed with a tall (Tt) white flower (rr) plant.
Genotype:
Phenotype:
I have to figure out what the genotype and phenotype of the offspring will be, using a punnet square. So, I have to set up a square:
___T____t___R____R
T [TT] [Tt] [TR] [TR]
t [Tt] [tt] [Rt] [Rt]
r [Tr] [tr] [Rr] [Rr]
r [Tr] [tr] [Rr] [Rr]
So, did I fill in that table correctly? I'm pretty sure I did it right.
So, if I did that right, the genotype and phenotype should be as the following:
Genotype: 1 TT; 2 Tt; 4 Tr; 1 tt; 2 TR; 2 Rt; 4 Rr
Phenotype: 9 tall; 3 short; ???
And now I'm confused. So, any help as to how to fill this out, or if I've made any mistakes, please tell me. This stuff is hard for me.
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2. A heterozygous round seed and a heterozygous green seed is crossed with a heterozygous round seed and a heterozygous green seed.
Parent Genotype:
Offspring Genotype:
Offspring Phenotype:
So, a heterozygous round seed (let's say Rr) and a heterozygous green seed (let's say Gg) is crossed with a heterozygous round seed (Rr) and a heterozygous green seed (Gg).
So, we are comparing more than 2 different things here, so how would I make the punnet square? I'm so confused.
Would the parent genotype be:
Parent Genotype: Rr x Gg x Rr x Gg
? Anymore help with these problems would be just fantastic. Thanks for your time!
-Jared
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