Advanced Placement (AP) Biology Practice Exam

Question: 1 / 490

Which of the following best defines phenotype?

The genetic structure of an organism

Physical characteristics of an organism

The concept of phenotype refers specifically to the observable physical characteristics of an organism, which arise from the interaction between its genotype (the genetic makeup) and the environment. This includes traits like height, color, and shape, as well as more complex features like behavior or physiological responses.

In contrast, the genetic structure of an organism pertains to the genotype, which encompasses all the alleles that an organism carries. The possible gene combinations relate to the different genotypes that can exist, while the ability to express dominant traits speaks to the genetic mechanisms underlying trait expression rather than the traits themselves. Thus, the physical characteristics define what we recognize and can measure or observe, making the definition of phenotype best captured by the options available.

Get further explanation with Examzify DeepDiveBeta

The possible gene combinations

The ability to express dominant traits

Next Question

Report this question

Download Advanced Placement (AP) Biology Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy