QuestenaPractice that shows what to review next
SearchCreate a test
Question 107

A student says that one individual giraffe evolved during its lifetime. Why is that use of the word wrong?

  1. Because evolution refers to the appearance of a completely new species
  2. Because evolution happens in a stable environment rather than a changing one
  3. Because an individual evolves after it has reproduced
  4. Because evolution describes change in a population over generationsCorrect answer

Explanation

An individual keeps the alleles it was born with, so nothing about its inherited makeup changes as it grows, however much its body alters. What changes over time is how common each allele is among all the members of a population, and that can only be seen by comparing one generation with the next.

Continue with this test

Start practice
Understand this topic (≈6 min)Back to test
Question 107: A student says that one individual giraffe evolved during… · Genetics Basics · Questena