Biology CLEP Prep Practice Exam

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Prepare for the Biology CLEP Test with comprehensive flashcards and multiple choice questions. Each question comes with explanations and hints to ensure a full understanding. Boost your exam readiness today!

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If an organism is homozygous for a trait, what does this mean?

It has two copies of the same allele
It has two different alleles
It is a carrier of a genetic disorder
It is in a heterozygous state

The correct answer is: It has two copies of the same allele

A homozygous organism means that it has two identical alleles for a specific trait. This is caused when the individual inherits the same allele from both parents. In this case, both alleles will have the same effect on the trait, leading to a consistent expression of the trait. The incorrect options are B) and D) because they both describe a state of heterozygosity, where the organism has two different alleles for a specific trait. Option C) is incorrect because being a carrier of a genetic disorder is not related to being homozygous for a trait.