EVOLUTION
EVIDENCE FOR EVOLUTION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
heritable variation and natural selection.
|
|
use and disuse.
|
|
a tendency toward perfect, unchanging species.
|
|
the transmission of acquired characteristics.
|
Detailed explanation-1: -The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
Detailed explanation-2: -Individuals with adaptive traits-traits that give them some advantage-are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring. Over time, these advantageous traits become more common in the population.
Detailed explanation-3: -More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.