Normal growth in oats is dominated by gigantism, and early maturity over late maturity.

Normal growth in oats is dominated by gigantism, and early maturity over late maturity. The genes for both traits are located in different pairs of chromosomes. What traits will the hybrids obtained from crossing heterozygous parents for both traits have? What is the phenotype of the parent?

Let’s designate the gene for normal growth in oats as K, then the gene for the development of giant oat plants will be k.

Let’s designate the gene that determines the early maturity of oats as L, then the gene for the late maturity of this plant will be l.

Parental plants heterozygous for both traits, according to the introduced designations, have KkLl genotypes, which corresponds to early maturity and normal growth.

They are capable of producing four types of germ cells – KL, kl, Kl, kL.

Their possible offspring include the following options:

early maturing oats with normal growth (4 KkLl, KKLL, 2KkLL, 2KKLl) – 56.25%;

early maturing oats with giant growth (2Kkll, KKll) – 18.75%;

late-ripening oats with giant growth (kkll) – 6.25%;

late ripening oats with normal growth (kkLL, 2kkLl) – 18.75%.