When a population exhibits adaptation, it indicates that the population has responded to a pressure from the environment in a way that causes the prevalence of beneficial features to rise over time.
Natural selection only affects heritable traits in populations, favoring advantageous alleles and reducing the frequency of harmful alleles, a process known as adaptive evolution. Natural selection only affects heritable traits in populations. However, natural selection affects whole organisms rather than specific alleles. A person may have a genotype that is extremely advantageous and a phenotype that, for example, boosts fecundity, but if that person also contains an allele that causes a fatal childhood ailment, the fecundity phenotype won't be passed on to the next generation.
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Answer:
<h3>THE ANSWER IS IN THE PICTURE</h3>
Explanation:
<h3>HOPE IT HELP'Sシ︎</h3>
<span>Scientists choose where are units of time began and ended based on major changes in life forms at certain times</span>
