BIOD 210 Module 2 Exam (Latest Update
2026/2027) Genetics | Questions & Answers |
Grade A | 100% Correct. Portage Learning.
1. A biology student is studying the characteristics of an organism. What is
the term for distinguishing characteristics of an organism?
A. Phenotypes
B. Traits
C. Genotypes
D. Alleles
CORRECT ANSWER: B. Traits
Rationale: Traits are distinguishing characteristics of an organism, such
as eye color or height.
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2. A researcher observes the physical expression of genetic traits in a
plant population. What term describes these physical expressions?
A. Genotypes
B. Alleles
C. Phenotypes
D. Genes
CORRECT ANSWER: C. Phenotypes
Rationale: Phenotypes are the physical expressions or observable
characteristics of genetic traits.
3. A geneticist crosses two pure individual parental strains that contrast
only in the trait being observed. What is this type of cross called?
A. Dihybrid cross
B. Trihybrid cross
C. Mono-hybrid cross
D. Test cross
CORRECT ANSWER: C. Mono-hybrid cross