You are studying a plant whose seed shape (round, disc orelongated) and seed color (yellow, green grey) are determined bytwo different gene loci. The R/r locus controls seed shape and theY/y locus control seed color. You have some data from single-traitcrosses that were carried out by a friend of yours:
-Yellow and green seed plants each breed true when self crossed,but grey seed plants produce offspring of all 3 color seeds.
-Round seed crossed with elongated seed plants produce only discshaped seed plants.
When two plants having the same phenotype of seed shape andcolor were crossed, the offspring appeared in the followingproportions.
1/16 round yellow 1/8 disc yellow, 1/8 elongated grey,
1/16 elongated yellow 1/8 round grey, 1/8 disc green,
1â„4 disc grey 1/16 round green, 1/16 elongated green
A) in your cross: what are the (i) genotype of the parents (ii)genotypes of the offspring and (iii) the phenotype of the parents?Draw a Punnett Square to show your answer.
B) what type of allele interaction is occurring for (i) seedshape? What about (ii) seed color? Explain how you can tell.
C) Based on the data from these crosses – is there any sort ofepistatic interaction between the genes? Explain why or whynot.
