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All modern domesticated pigeons have distinct traits that have been chosen by breeders, including the trait for feathered feet. Although most birds have scaly feet (without feathers), some species, including domesticated pigeons, possess a genetic mutation that allows them to have feathered feet, which is a non-Mendelian trait.

A breeder crosses a homozygous bird with long feathers on the feet (F^LF^L) with a homozygous bird with scaly feet and no feathers (F^NF^N), and all of the offspring have feet with unusually short feathers, unlike either parent.
Part 1: Based on the information provided, what can you conclude about the pattern of inheritance for the feathered foot gene?
Part 2: Explain to the breeder what happened in this cross. Be sure to include both phenotypes and genotypes in your explanation.

Question

26-02-2024
Biology

contestada

HELP ASAP PLSSSS
All modern domesticated pigeons have distinct traits that have been chosen by breeders, including the trait for feathered feet. Although most birds have scaly feet (without feathers), some species, including domesticated pigeons, possess a genetic mutation that allows them to have feathered feet, which is a non-Mendelian trait.

A breeder crosses a homozygous bird with long feathers on the feet (F^LF^L) with a homozygous bird with scaly feet and no feathers (F^NF^N), and all of the offspring have feet with unusually short feathers, unlike either parent.
Part 1: Based on the information provided, what can you conclude about the pattern of inheritance for the feathered foot gene?
Part 2: Explain to the breeder what happened in this cross. Be sure to include both phenotypes and genotypes in your explanation.

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maskfirerh maskfirerh · Answer 1 · 2024-02-26T11:15:41+01:00

Answer:

In this cross, the feathered foot gene demonstrates incomplete dominance. The homozygous bird with long feathers on the feat (F^LF^L) crossed with the homozygous bird with scaly feat and no feathers (F^NF^N) results in offspring with unusually short featheers on the feet. This suggests that the heterozygous genotype (F^LF^N) leads to an intermediate phenotyoe of short feathers. The breeder should understand that the feathered foot trait is not stricly dominant or recessive, but rather, it exhibits incomplete dominance where the heterozygous condition manifests as a distinct phenotype.