What statement best describes a dominant allele?
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A. the version of the trait that is expressed over other alleles for the same trait
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B. the version of the trait that is expressed only if the individual is homozygous for that trait
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C. the version of the trait that is expressed only if the individual is heterozygous for that trait
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D. the version of the trait that is more beneficial to the individuals survival

A. The version of the trait that is expressed over other alleles for the same trait.

Explanation:

It is called dominant because if it is present, even in heterozygous situations, it will be expressed.

A. the version of the trait that is expressed over other alleles for the same trait

Explanation:

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.