Multiple choice

The genetic constitution of an organism is

  1. phenotype

  2. gene

  3. genotype

  4. variation

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Genotype refers to the genetic constitution of an organism - the complete set of genes it carries. Phenotype is the observable expression of genes. A gene is a single unit of heredity, and variation refers to differences between organisms, not the genetic constitution itself.