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Multiple Choice
Which description is an example of a phenotype?
A
The presence of a gene for blue eyes
B
The sequence of nucleotides in DNA
C
The blue color of a person's eyes
D
The genetic code for blood type O
Verified step by step guidance
1
Understand the concept of phenotype: A phenotype is the set of observable characteristics or traits of an organism, such as its morphology, development, biochemical or physiological properties, and behavior.
Differentiate between genotype and phenotype: Genotype refers to the genetic makeup of an organism, the information contained within its DNA, while phenotype is the expression of that genetic information as observable traits.
Identify the examples given: The presence of a gene for blue eyes, the sequence of nucleotides in DNA, the blue color of a person's eyes, and the genetic code for blood type O.
Determine which examples are genotypes: The presence of a gene for blue eyes and the genetic code for blood type O are examples of genotypes, as they refer to the genetic information itself.
Identify the phenotype: The blue color of a person's eyes is an example of a phenotype, as it is an observable trait resulting from the expression of genetic information.