The shape and the colour of radishes are controlled by two independent pairs of alleles that show no dominance; each genotype is distinguishable phenotypically. The colour may be yellow (YY), purple (Y′ Y), or white (Y′ Y′) and the shape may be long (LL), oval (L′ L), or round (L′ L′). using the Punnett square method, diagram a cross between yellow, long (YYLL) and white, round (Y′ Y′ L′ L′) radishes and summarize the F2 results under the headings phenotypes, genotypes, genotypic frequency, and phenotype ratio.
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