If a person has a recessive allele for a disorder and that allele is masked by the presence of a normal dominant allele, this personIf a person has a recessive allele for a disorder and that allele is masked by the presence of a normal dominant allele, this person:.

Is a carrier.

Explanation:

In genetic engineering, a carrier is simply describes an organism that carries two different forms (alleles) of a recessive gene (alleles of a gene linked to a recessive trait) and is thus heterozygous for that the recessive gene.

Even though carriers may act to convey and maintain recessive genes within a population by passing them on to offspring, the carriers themselves are not affected by the recessive trait associated with the recessive gene.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

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