**Genetics and Heredity: Phenotypic Traits in Chickens****9. Phenotypic Representation in Creeper Chickens**In chickens, the heterozygous Cp cp genotype leads to a condition known as creeper, characterized by shorter leg and wing bones compared to normal chickens (genotype cp cp). It is important to note that the dominant Cp allele is lethal when in a homozygous state. Furthermore, another independently segregating gene influences skin color, with two alleles determining white (W-) versus yellow (ww) skin pigmentation. The key question is:From matings between chickens that are heterozygous for both the leg and wing bone condition (Cp cp) and the skin color gene (Ww), what phenotypic classes will be represented among the viable offspring? Additionally, what are the expected relative frequencies of these phenotypic classes?This scenario calls for a detailed understanding of Mendelian genetics, including dominance, lethality, and independent assortment. The expected phenotypic ratios can be predicted using a dihybrid cross, taking into account the lethality of the Cp Cp homozygous condition. The solution involves setting up a Punnett square for both traits (creeper condition and skin color), calculating the possible genotypes, and then determining the phenotypes and their frequencies, discarding any lethal genotypes.**Expected Outcomes:**1. **Genotypic Breakdown:** - Non-lethal combinations only (e.g., Cp cp, cp cp for leg/wing condition).2. **Phenotypic Classes:** - Determine the proportion of offspring with normal vs. creeper traits. - Categorize the skin color outcomes (white or yellow).3. **Relative Frequencies:** - Calculate the percentage of each phenotypic class represented among the viable progeny based on Mendelian ratios.---This information aligns with the learning objectives in genetics, particularly focusing on inheritance patterns, allele interactions, and predicting phenotypic outcomes in offspring based on parental genotypes. Understanding these principles is crucial for students in the biological sciences.

Name: **Genetics and Heredity: Phenotypic Traits in Chickens****9. Phenotyp
Uploaded: 2024-03-20T06:43:04.000Z
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Description: **Genetics and Heredity: Phenotypic Traits in Chickens****9. Phenotypic Representation in Creeper Chickens**In chickens, the heterozygous Cp cp genotype leads to a condition known as creeper, characterized by shorter leg and wing bones compared to n