If you want to know the genotype of a pea plant that has purple flowers, which would you perform?

a. dihybrid cross


b. genetic linkage


c. Punnett square


d. testcross

If you want to know the genotype of a pea plant that has purple flowers, which would you perform?
d. testcross





A testcross is a cross of an unknown with a known genotype of homozygous recessive for each gene being studied so that the inheritance of the unknown can be determined from the genotypes and phenotypes of the offspring.
Reply:d. testcross





Cross it with a pea plant that is expressing the recessive flower color (white). If any of the offspring have white flowers, then your purple-flowered plant was heterozygous for its flower color trait.