To determine the correct statement about the patterns of dominance represented in each model, we need to clarify the definitions of codominance, incomplete dominance, and complete dominance:
- Complete dominance occurs when one allele is completely dominant over another, leading to a phenotype that expresses only the dominant trait when at least one dominant allele is present.
- Incomplete dominance occurs when the heterozygous phenotype is a blend of the two parental traits. Neither allele is completely dominant.
- Codominance occurs when both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits distinctly.
Without the specific diagrams for Models W and X, I can't definitively say which pattern each model represents. However, based on the definitions, you can analyze the diagrams based on the following:
- If the offspring display a blend of two traits (e.g., red flower and white flower producing pink flowers), this indicates incomplete dominance.
- If the offspring show both parental traits clearly (e.g., red and white flowers occurring together on the same plant), this indicates codominance.
- If the offspring only display the trait of one parent when heterozygous (e.g., all red flowers if red is dominant over white), this indicates complete dominance.
Using this reasoning, you can match the descriptions to determine which statement is correct amongst the given options (a, b, c, or d). If you are able to describe the models based on these definitions or provide more details from the diagrams, I can assist you further in determining the correct answer.
1 answer