While doing field work in Madagascar, you discover a new dragonfly species that has either red (R)or clear (r)wings.Initial crosses indicate that R is dominant to r.You perform three crosses using three different sets of red-winged parents with unknown genotype and observe the following data: Which cross is likely to have at least one parent with the genotype RR?

Freckles are caused by a dominant allele.A man has freckles but one of his parents does not have freckles.The man has fathered a child with a woman that does not have freckles.What is the probability that their child has freckles?

If an organism of genotype Aa is used for a testcross, what is the genotype of the other individual used in the cross?