Multiple Choice
DNA and RNA are examples of which class of biomolecules?
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
Which of the following is an example of a genotype?
A
Aa
B
Brown eyes
C
Tall plant
D
Homozygous dominant
Verified step by step guidance1
Understand the difference between genotype and phenotype: A genotype refers to the genetic makeup of an organism, specifically the alleles it carries, while a phenotype is the observable physical or biochemical characteristics resulting from the genotype and environment.
Identify the options given: 'Aa', 'Brown eyes', 'Tall plant', and 'Homozygous dominant'.
Recognize that 'Aa' represents a pair of alleles (one dominant 'A' and one recessive 'a'), which is a direct representation of genetic information, hence a genotype.
Note that 'Brown eyes' and 'Tall plant' describe physical traits, which are phenotypes, not genotypes.
Understand that 'Homozygous dominant' is a description of a genotype category but not a specific genotype itself; it refers to having two dominant alleles (e.g., 'AA'), so the specific genotype example is 'Aa'.
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