We appreciate your visit to In carnations the alleles for flower color exhibit incomplete dominance Red flowers have the RR genotype Pink flowers have the RW genotype White flowers have. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
Final answer:
When a red carnation is crossed with a white one, incomplete dominance results in all offspring having pink flowers. The genotypic ratio is A. 0 RR : 4 RW : 0 WW, meaning all offspring are RW (pink).
Explanation:
In the case of carnations showing incomplete dominance for flower color, when a homozygous red flower (RR) is crossed with a homozygous white flower (WW), the alleles combine in a way that allows both to be expressed, resulting in offspring with pink flowers (RW). Since each parent contributes one allele to the offspring, all offspring from this cross will have one red allele (R) and one white allele (W), making them RW. Therefore, the expected genotypic ratio of their offspring is 0 RR : 4 RW : 0 WW, which corresponds to option A, 100% pink flowers due to incomplete dominance of the red and white alleles.
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