You are interested in analyzing the segregation of petal color in tulips over ge

Question

You are interested in analyzing the segregation of petal color in tulips over generations. You are tracking red and white petal colors, and lets assume that petal color results from a single-gene. You know from a trial cross that the F1 progeny from crossing a pure red tulip to a pure white tulip results in all red progeny. For the following questions, use the letters R and r to denote petal color genotype and make sure to clearly indicate the associated phenotypes.

Petal Color Questions

1. Based on the information given above, what do you know about which trait is dominant and which is recessive? Why?

a. If "R" is used to denote the genotype of the dominant allele, which petal color does "R" represent?

b. If "r" is used to denote the genotype of the recessive allele, which petal color does "r" represent?

Explanation / Answer

from mendals law we can see that when cross between red and white tulip the F1 generation shows red color so red color will be dominant. if we represent R for red color and r for white color and take homozygous for parents RR red and rr white so in F1 it shows genotype Rr so here red color is dominant and R for red and r for white

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