Epistasis is defined as "when the allele of one gene interferes with the expression of another gene."
What is the definition of epistasis?(1 point) Responses when one trait is determined by multiple genes when one trait is determined by multiple genes when a dominant allele for a specific trait is not completely expressed over the recessive allele when a dominant allele for a specific trait is not completely expressed over the recessive allele when the allele of one gene interferes with the expression of another gene when the allele of one gene interferes with the expression of another gene when one gene affects multiple phenotypes when one gene affects multiple phenotypes
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Which is an example of codominance?(1 point) Responses tall and short plant heights tall and short plant heights seed shape in pea plants seed shape in pea plants black and yellow coat color in Labrador retrievers black and yellow coat color in Labrador retrievers black and brown spotted coat color in horses
An example of codominance is "black and yellow coat color in Labrador retrievers." In this case, both black and yellow pigments are expressed in the offspring.
Consider that a plant with genotype RR has red flowers and a plant with genotype WW has white flowers. This plant species expresses incomplete dominance for flower color when the plant is heterozygous. The offspring of a cross between an RR plant and a WW plant would be (1 point) Responses all white. all white. red and pink. red and pink. all pink. all pink. pink and white.
The offspring of a cross between an RR plant (red flowers) and a WW plant (white flowers) would be all pink. In incomplete dominance, the heterozygous genotype (RW) results in a blending of the two phenotypes, leading to pink flowers.
A genetic disease is found in a family that affects the immune system, lungs, heart, and kidneys. A DNA analysis of several affected and unaffected family members determines that the disease is caused by a mutation in a single gene. What type of inheritance pattern is shown in this disease?(1 point) Responses codominance codominance pleiotropy pleiotropy polygenic trait polygenic trait incomplete dominance
The inheritance pattern shown in this disease is pleiotropy. Pleiotropy occurs when a single gene affects multiple phenotypic traits, in this case, the immune system, lungs, heart, and kidneys.
If a homozygous white horse CWCW and a homozygous black horse CBCB are bred together, what is the likelihood that their offspring will be roan with both colors represented in their hair if this gene follows a codominant inheritance pattern?(1 point) Responses 50% 50% 25% 25% 0% 0% 100%
If a homozygous white horse (CWCW) is bred with a homozygous black horse (CBCB), and the gene follows a codominant inheritance pattern, all of the offspring will have the genotype CWCB. In codominance, this genotype would result in roan coloration, where both colors are expressed.
Thus, the likelihood that their offspring will be roan with both colors represented in their hair is 100%.
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