Charles Darwin was a biologist that took a trip in The Beagle to different parts of the world in order to study evolution. In The Galapagos, he found the same species of birds but with different adaptations according to the island they lived in. Based on his observations of the birds, Darwin realized that <u>limited resources in an environment forces more genetic changes in individuals, allowing the species to evolve more quickly</u>. Due to this, option D is correct.
Select the two terms that correctly complete this statement. Observable traits exhibited by an organism do not always indicate the exact genetic makeup of that organism because of recessive alleles and <span>polygenic traits</span>.
