Chickens with the dominant allele at the frizzle gene produce curly feathers, have very high body temperature, and lay few eggs. This is an example of pleiotropy. epistasis. polygenic traits. random assortment.
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Pleiotropy: This term refers to a single gene that affects more than one trait. In this case, the frizzle gene affects the chicken's feather type, body temperature, and egg-laying capacity. So, this is an example of pleiotropy. Show more…
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Katlin K.
In chickens, there is a mutant gene called "frizzle" that results in weak, stringy, and easily broken feathers. When a frightfully frizzled fowl is bred to a normal chicken, the offspring are mildly frizzled. If one breeds two mildly frizzled chickens to each other, the offspring have the phenotypic ratio of normal: 2 mildly frizzled: 1 frightfully frizzled. Indicate the parent phenotypes and genotypes, and draw a Punnett square for this cross.
Isaac R.
Use the following information. In chickens, neither the normal-feathered gene $F$ nor the frizzle-feathered gene $f$ is dominant. So chickens whose feather genes are $F F$ will have normal feathers. Chickens with $F f$ will have mildly frizzled feathers. Chickens with $f f$ will have extremely frizzled feathers. IMAGE CANNOT COPY. The Punnett square at the right shows the possible results of crossing two chickens with mildly frizzled feathers. Find a model that can be used to represent the Punnett square and write the model as a polynomial.
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