Multiple Choice
In the fundamentals of genetics, a phenotype is best defined as which of the following?
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
In the fundamentals of genetics, the term genotype refers to the:
A
observable characteristics of an organism (the expressed traits)
B
physical location of a gene on a chromosome
C
genetic makeup of an organism (the alleles it carries for a trait)
D
set of environmental conditions that influence trait expression
Verified step by step guidance1
Understand that the term 'genotype' in genetics specifically refers to the genetic makeup of an organism, meaning the set of alleles it carries for a particular trait.
Differentiate 'genotype' from 'phenotype,' where phenotype refers to the observable characteristics or expressed traits of an organism.
Recognize that the physical location of a gene on a chromosome is called the 'locus,' which is different from genotype.
Note that environmental conditions can influence how traits are expressed, but these conditions do not define the genotype itself.
Conclude that the correct definition of genotype is the genetic composition (alleles) of an organism, which determines potential traits but is distinct from the traits actually observed.
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