Heterozygote plants for two traits (RrYy) were crossed and the
offspring strongly differed from the expected phenotype ratio. What
is the most likely explanation based on this information alone?
(a) a high mutation rate
(b) the genes for the two traits were located in different
(c) the phenotypes “behaved” according to the blending inheritance
(d) the genes in question are linked
(e) crossing-over was happening