Question

multiple choice question
a precise definition of evolution is the

change in physical characteristics of an individual in its lifetime.
net change in population size over multiple generations.
change in a phenotype toward a more advanced form of the trait.
genetic change in a population over multiple generations.

Explanation:

To determine the correct definition of evolution, we analyze each option:

• The first option is incorrect because evolution is about populations, not individual physical changes during a lifetime.
• The second option is wrong as evolution is not about population size change but genetic changes in the population.
• The third option is incorrect as evolution does not imply a "more advanced" form (it's about genetic change, not a directional improvement in a trait's form).
• The fourth option is correct because evolution is defined as the genetic change in a population over multiple generations.

Answer:

D. genetic change in a population over multiple generations.