Question

nonadditive effects would be likely to show up in which of the following pairs of siblings? question 3 options: rebekah and raina, who were both adopted into a family and are not genetically related. lawrence and ira, who are fraternal twins. monique and james, who were born 2 years apart. rock and jacque, who are identical twins.

Answer 1

Nonadditive effects would likely show up in the siblings in option d.) Rock and Jacque, are identical twins.

Nonadditive effects are the interactive effects between different alleles. It also includes genetic dominance and epistasis. Genetic dominance is the interaction between a gene on the same locus and epistasis. Epistasis refers to the interaction between genes at a different locus.

In nonadditive effects, only one allele contributes to the phenotype. In this effect, either one allele is interfered with by another allele, or only one allele is expressed.

Nonaddictive effects do not follow Mendelian patterns of inheritance. It is observable and controlled by a few genes only.

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