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Multiple Choice
What is the primary difference between phenotypes and genotypes?
A
Phenotypes are the observable traits, while genotypes are the genetic makeup.
B
Genotypes are influenced by the environment, while phenotypes are not.
C
Phenotypes are the DNA sequences, while genotypes are the proteins produced.
D
Genotypes are the observable traits, while phenotypes are the genetic makeup.
Verified step by step guidance
1
Understand the definitions: A phenotype refers to the observable characteristics or traits of an organism, such as its morphology, development, biochemical or physiological properties, and behavior. A genotype, on the other hand, refers to the genetic makeup of an organism; it is the set of genes that an organism carries.
Recognize the relationship: The genotype of an organism influences its phenotype. However, the phenotype is not solely determined by the genotype; environmental factors can also affect the phenotype.
Clarify the misconception: Genotypes are not influenced by the environment; they are the genetic code that remains constant. It is the phenotypes that can be influenced by environmental conditions.
Differentiate between DNA and proteins: Genotypes are composed of DNA sequences, which are the instructions for building proteins. Phenotypes are not DNA sequences; they are the result of the expression of these proteins.
Summarize the correct distinction: Phenotypes are the observable traits of an organism, while genotypes are the underlying genetic instructions that contribute to these traits. The environment can influence phenotypes, but not genotypes.