CLEP College Level Examination Program Sample Test

Try 5 free practice questions with instant feedback. See how ready you are.

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Sample Questions

Question 1

What is Mendel's Law of Segregation?

Answer: Each organism carries two alleles for each trait, and these alleles separate during gamete formation so that each gamete carries only one allele.

Question 2

What phenotypic ratio is expected in the F2 generation of a monohybrid cross between two heterozygotes (Aa × Aa)?

Answer: 3:1 — three dominant phenotype individuals to one recessive phenotype individual.

Question 3

What is the genotypic ratio produced by a testcross of a heterozygous dominant individual (Aa) with a homozygous recessive individual (aa)?

Answer: 1:1 — half the offspring are Aa (heterozygous) and half are aa (homozygous recessive).

Question 4

What does Mendel's Law of Independent Assortment state?

Answer: Alleles of different genes assort independently of one another during gamete formation, provided the genes are on different chromosomes.

Question 5

In incomplete dominance, what phenotype appears in F1 heterozygotes of a cross between a red-flowered plant (RR) and a white-flowered plant (rr)?

Answer: Pink flowers — the heterozygote (Rr) shows an intermediate phenotype rather than one allele being completely dominant.