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BIOD 210 Module Final Exam (Latest Update )
Genetics | Questions & Answers | Grade A | 100% Correct.
Portage Learning.
1. A nurse is assessing a patient and documenting observable traits such as eye color,
blood type, and height. The term used to describe the physical manifestation of any trait
is:
A. Genotype
B. Phenotype
C. Karyotype
D. Allele
CORRECT ANSWER: B
RATIONALE: Phenotype refers to the observable, physical characteristics or traits of an
organism, which result from the interaction of its genotype (genetic makeup) with the
environment.
2. A nursing student is studying a monohybrid cross between two heterozygous parents
(Tt x Tt). In the second generation (F2) of this cross, what percentage of the offspring
are expected to display the dominant phenotype, and what percentage the recessive
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phenotype?
A. 50% dominant, 50% recessive
B. 75% dominant, 25% recessive
C. 100% dominant, 0% recessive
D. 25% dominant, 75% recessive
CORRECT ANSWER: B
RATIONALE: In a monohybrid cross of two heterozygous individuals (Tt x Tt), the
genotypic ratio is 1 TT : 2 Tt : 1 tt. Since both TT and Tt display the dominant
phenotype, this results in a phenotypic ratio of 3:1, meaning 75% of offspring show
the dominant trait and 25% show the recessive trait.
3. A genetics instructor asks a student to define a gene. Which response is most
accurate?
A. A gene is a protein that determines a specific trait.
B. A gene is a unit of heredity that is transferred from parent to offspring and
determines some characteristic of the offspring.
C. A gene is the observable physical appearance of an organism.
D. A gene is a type of chromosome found in the nucleus.
CORRECT ANSWER: B
RATIONALE: A gene is the fundamental physical and functional unit of heredity. It is a
BIOD 210 Module Final Exam (Latest Update )
Genetics | Questions & Answers | Grade A | 100% Correct.
Portage Learning.
1. A nurse is assessing a patient and documenting observable traits such as eye color,
blood type, and height. The term used to describe the physical manifestation of any trait
is:
A. Genotype
B. Phenotype
C. Karyotype
D. Allele
CORRECT ANSWER: B
RATIONALE: Phenotype refers to the observable, physical characteristics or traits of an
organism, which result from the interaction of its genotype (genetic makeup) with the
environment.
2. A nursing student is studying a monohybrid cross between two heterozygous parents
(Tt x Tt). In the second generation (F2) of this cross, what percentage of the offspring
are expected to display the dominant phenotype, and what percentage the recessive
, 2|Page
phenotype?
A. 50% dominant, 50% recessive
B. 75% dominant, 25% recessive
C. 100% dominant, 0% recessive
D. 25% dominant, 75% recessive
CORRECT ANSWER: B
RATIONALE: In a monohybrid cross of two heterozygous individuals (Tt x Tt), the
genotypic ratio is 1 TT : 2 Tt : 1 tt. Since both TT and Tt display the dominant
phenotype, this results in a phenotypic ratio of 3:1, meaning 75% of offspring show
the dominant trait and 25% show the recessive trait.
3. A genetics instructor asks a student to define a gene. Which response is most
accurate?
A. A gene is a protein that determines a specific trait.
B. A gene is a unit of heredity that is transferred from parent to offspring and
determines some characteristic of the offspring.
C. A gene is the observable physical appearance of an organism.
D. A gene is a type of chromosome found in the nucleus.
CORRECT ANSWER: B
RATIONALE: A gene is the fundamental physical and functional unit of heredity. It is a
