McGraw-Hill Online Learning Center Test

McGraw-Hill Online Learning Center Test


1. Review the image and answer the following questions.

What is the purpose of performing a testcross?

A. to see whether crosses between two closely related species are viable
B. to determine the phenotype of the offspring
C. to determine the genotype of the unknown parent
D. to determine linkage patterns


2. Choose the statement that is correct regarding testcrosses.

A. Testcrosses can only be performed on single traits (monohybrid crosses).
B. Testcrosses are performed on plants and not animals.
C. Testcrosses are performed using a homozygous dominant for a trait.
D. Testcrosses are performed using a homozygous recessive for a single or multiple traits.
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