Extensions to Mendel Video Lessons

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Problem: In the organism under consideration, r* acts like r allele, except when homozygous (r*r*). From the information given below, work out the phenotypic and genotypic ratios for each of the crosses.Given: RR (red) x rr (white) → Rr (pink); andrr* x rr* → 3/4 white, 1/4 dead zygotes1. Rr x Rr2. Rr x rr3. Rr* x Rr*4. Rr* x rr*

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Problem Details

In the organism under consideration, r* acts like r allele, except when homozygous (r*r*). From the information given below, work out the phenotypic and genotypic ratios for each of the crosses.

Given: RR (red) x rr (white) → Rr (pink); and

rr* x rr* → 3/4 white, 1/4 dead zygotes

1. Rr x Rr

2. Rr x rr

3. Rr* x Rr*

4. Rr* x rr*

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Based on our data, we think this problem is relevant for Professor Upadhyaya's class at USF.