Answer: I) Isotopes
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(brainliest is appreciated!)
This means that each dominant allele "adds" to the expression of the next dominant allele. Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles.
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Oxygen will diffuse from an area of higher concentration (outside the cell) to an area of lower concentration (inside the cell). </span>
Answer:
The answer is letter A.
Explanation:
A loss-of-function mutant in the gene encoding Mad2.
