In a species of tomato plant, the allele for a tall stem (TTT) is dominant to the allele for a dwarf stem (ttt). In the same species, fruit colour is determined by two alleles, CRC^RCR (red) and CWC^WCW (white). When homozygous red-fruited plants are crossed with homozygous white-fruited plants, all the offspring have pink fruits.
Name the genetic relationship shown by the two alleles that code for fruit colour.
A dwarf, pink-fruited plant is crossed with a heterozygous tall, white-fruited plant. State the genotypes of the parents, and determine the expected genotypes, phenotypes, and ratio of the offspring.
An isolated population of this plant species contains 9% white-fruited plants. Assuming the population is in Hardy-Weinberg equilibrium, calculate the percentage of pink-fruited plants in this population. Show your working.
