HESI GENETICS & DNA EXAM NEWEST 2026 QUESTIONS
and CORRECT DETAILED ANSWERS ALREADY GRADED
A+
KEY CONCEPTS (HIGH-YIELD)
DNA = genetic blueprint
Genes = segments of DNA
Chromosomes = structures carrying genes
Humans = 46 chromosomes (23 pairs)
Dominant vs Recessive traits
Genotype vs Phenotype
SECTION A: BASIC GENETICS
1.
What is the primary function of DNA?
A. Produce energy
B. Store genetic information
C. Transport oxygen
D. Digest food
, Answer: B
Rationale:
DNA carries instructions for growth, development, and function.
2.
How many chromosomes are in a normal human somatic cell?
A. 23
B. 46
C. 44
D. 48
Answer: B
Rationale:
Humans have 23 pairs = 46 chromosomes.
3.
A gene is:
A. A protein
B. A chromosome
C. A segment of DNA
D. A cell
and CORRECT DETAILED ANSWERS ALREADY GRADED
A+
KEY CONCEPTS (HIGH-YIELD)
DNA = genetic blueprint
Genes = segments of DNA
Chromosomes = structures carrying genes
Humans = 46 chromosomes (23 pairs)
Dominant vs Recessive traits
Genotype vs Phenotype
SECTION A: BASIC GENETICS
1.
What is the primary function of DNA?
A. Produce energy
B. Store genetic information
C. Transport oxygen
D. Digest food
, Answer: B
Rationale:
DNA carries instructions for growth, development, and function.
2.
How many chromosomes are in a normal human somatic cell?
A. 23
B. 46
C. 44
D. 48
Answer: B
Rationale:
Humans have 23 pairs = 46 chromosomes.
3.
A gene is:
A. A protein
B. A chromosome
C. A segment of DNA
D. A cell
