In chickens, there is a mutant gene called ʺfrizzleʺ that results in weak, stringy, and easily broken feathers. When a frightfully frizzled fowl is bred to a normal chicken, the offspring are all mildly frizzled. If one breeds two mildly frizzled chickens to each other, the offspring have the phenotypic ratio of 1 normal: 2 mildly frizzled: 1 frightfully frizzled. What is the mode of inheritance of ʺfrizzleʺ?

codominance

Explanation:

The mode of inheritance of frizzle is codominance.

In codominance mode of inheritance, the two alleles representing a gene exert equal effects on ech other. Both alleles contribute equally to the phenotypic (physical appearance) expression of the gene.

For example, if A and B represent alleles of the same gene that are codominant over one another, instead of A or B to be expressed in the phenotype (if A or B is dominant), AB will be expressed.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

the fossil record provides evidence of a common ancestor to many species.