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(WGU C652) BIO 3105 - Heredity & Genetics - OA Review . $12.49   Add to cart

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(WGU C652) BIO 3105 - Heredity & Genetics - OA Review .

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(WGU C652) BIO 3105 - Heredity & Ge(WGU C652) BIO 3105 - Heredity & Genetics - OA Review .(WGU C652) BIO 3105 - Heredity & Genetics - OA Review .(WGU C652) BIO 3105 - Heredity & Genetics - OA Review s - OA Review .

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  • August 22, 2024
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  • 2024/2025
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C652 BIO 3105




Heredity & Genetics




OA REVIEW




©WGU 2024/2025

,1. Which of the following represents a homozygous genotype?
A) Aa
B) AA
C) AaBb
D) Aabb
Correct Answer: B (AA)
Rationale: Homozygous refers to having two identical alleles
for a specific gene, exemplified by AA.


2. In a dihybrid cross, what is the phenotypic ratio of the
offspring?
A) 9:3:3:1
B) 3:1
C) 1:2:1
D) 1:1
Correct Answer: A (9:3:3:1)
Rationale: A dihybrid cross involving two traits results in a
phenotypic ratio of 9:3:3:1 when both traits are independently
assorting.



©WGU 2024/2025

, 3. What is the function of messenger RNA (mRNA) in protein
synthesis?
A) Carries amino acids
B) Copies DNA
C) Transfers genetic information from DNA to ribosomes
D) Forms ribosomal structure
Correct Answer: C (Transfers genetic information from DNA
to ribosomes)
Rationale: mRNA is synthesized from DNA and carries the
genetic code to ribosomes where proteins are made.


4. Which genetic disorder is caused by a deficiency in the enzyme
phenylalanine hydroxylase?
A) Cystic fibrosis
B) Sickle cell anemia
C) Phenylketonuria (PKU)
D) Huntington’s disease
Correct Answer: C (Phenylketonuria (PKU))
Rationale: PKU is a metabolic disorder caused by the absence
of the enzyme needed to process the amino acid phenylalanine.


5. What type of inheritance pattern does blood type exemplify?
©WGU 2024/2025

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