Asked by Andres Cisneros on Jun 04, 2024
Verified
You have two true-breeding rose bushes, one with red flowers and one with white flowers. A cross between these two roses yields a bush with pink flowers. The pink flower color is an example of
A) codominance.
B) incomplete dominance.
C) environmental effects.
D) polygenic inheritance.
E) epistatic interaction.
Incomplete Dominance
A genetic phenomenon in which neither allele of a gene completely masks the other in a heterozygote, resulting in a phenotype that is a blend of the two alleles.
True-breeding
Referring to organisms that, when bred, produce offspring identical to themselves in regards to certain traits over many generations.
Pink Flowers
Plants characterized by their pink-colored blossoms, which result from varying pigment concentrations and can be found in numerous species across different habitats.
- Discriminate among incomplete dominance, codominance, epistasis, and polygenic inheritance.
Verified Answer
ZK
Zybrea KnightJun 08, 2024
Final Answer :
B
Explanation :
Incomplete dominance occurs when neither allele is completely dominant over the other, resulting in a blended phenotype. In this case, the red and white alleles are incompletely dominant, resulting in the pink phenotype. Codominance would result in both red and white being expressed equally, which is not the case here. Environmental effects, polygenic inheritance, and epistatic interactions do not apply to this scenario.
Learning Objectives
- Discriminate among incomplete dominance, codominance, epistasis, and polygenic inheritance.