GCEBiologyGenetics and Variation2021

Which of the following best describes a genotype?

AThe physical appearance of an organism resulting from its genes
BThe genetic constitution of an organism with respect to a traitCORRECT
CThe variation in traits observed among individuals in a population
DThe process by which genes are expressed in an organism
AI
Toaster Teacher
Why the answer is B, and why the others tempt you.
A genotype refers to the actual genetic makeup or allelic composition of an organism for a particular trait, such as AA, Aa, or aa. The physical appearance resulting from the genotype is called the phenotype. Options A and D describe phenotype and gene expression respectively, while C describes variation.
Want this in Pidgin, Yoruba, Igbo or Hausa? Sign up free →

Practice more Biology questions

GCE Biology has thousands more questions like this — with Worked answers on every one.

Start practicing free →See all Biology questions