The patient has blue eyes. During the interview with the nurse at the geneticist's office, the patient states that his mother has blue eyes and his father has brown eyes
Which statements by the nurse are accurate? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Select all that apply. 1. "You have two identical alleles that are responsible for your eye color.".
2. "The alleles responsible for your eye color are heterozygous.".
3. "Your eye color is the result of an expressed gene.".
4. "Alleles are forms of a gene.".
5. "Your eye color is just one part of your phenotype.".
2,3,4,5
Rationale 1: This patient has a blue-eyed mother and a brown-eyed father, so the patient has two different forms of the gene responsible for his eye color.
Rationale 2: The patient's alleles are heterozygous.
Rationale 3: The patient's blue eyes are the result of an expressed gene. An expressed gene impacts the patient's observable traits.
Rationale 4: Alleles are versions or forms of a gene. The patient's eye color is part of his phenotype.
Rationale 5: The phenotype is the patient's entire physical, biochemical, and physiologic makeup and is influenced by genetic and environmental factors.
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