Question

Charles Darwin was credited for writing the biological theory of __________________. The organisms that were used for the basis of his studies were ___________________.
these are the answer choices
A) evolution by natural selection, sweet peas
B) inheritance by independent assortment, sweet peas
C) evolution by natural selection, Galapagos finches
D) inheritance by independent assortment, Galapagos finches

Answer 1

Correct answer: C). Evolution by natural selection, Galapagos finches  

Charles Darwin gave the theory of natural selection in the year 1835 when he visits Galapagos Islands.

There he found several species of finches are adapted to different environmental niches. They have a different shape of the beak, food source they eat and the way they captured the food.

He observes that species vary from island to island, and based on these observations he gave the theory of natural selection.

Answer 2

The answer is C. He observed how the birds' beak sizes affected their ability to compete for food.