Question
Asked Sep 12, 2019
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assuming independent assortment, what phenotypic ratio would you expect to see if an individual with the genotype RrGg is self-crossed

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Expert Answer

Step 1

According to the law of independent assortment, the alleles of two different genes are sorted into the gamete independent of each other. This means, that if two genes are present on the same chromosome, then the alleles of these genes do not influence each other.  

Step 2

Given,

The genotype of the individual is RrGg.

Where, R (round seed) = dominant allele for shape of the seed.

r (wrinkled seed) = recessive allele for shape of the seed.

G (green pod) = dominant allele for the pod color

g (yellow pod) = recessive allele for the pod color

So, following the law of independent assortment, the phenotype of the given individual is round seed with green color pod.

Step 3

The individual is self-cros...

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Image Transcriptionclose

Parents RrGg RrGg Gametes RG Rg rG rg RG Rg rG rg Making the Punnett square: RG RRGG Rg RRGg (Round seed green pod) RRgg (Round seed, yellow pod) RrGg (Round seed Green pod) Rrgg (Round seed, yellow pod) Gametes rG rg RrGg (Round seed green pod) Rrgg (Round seed yellow pod) Gg (wrinkled seed Green pod) RG RIGG (Round seed Green pod) RrGg (Round seed Green pod) (Round seed green pod) RRGg (Round seed green pod) RrGG rG GG (Round seed green pod) RrGg (Round seed green pod) (wTinkled seed green pod) Gg (wrinkled seed, green pod) ngg (wrinkled seed, yellow pod) rg

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