2) Variation occurs within an organism due to genetic mutations, which can be caused by environmental factors such as radiation or chemicals. These mutations can lead to changes in the organism's physical characteristics, which can then be passed on to its offspring.
5) The main source of evidence for evolution is the fossil record, which shows the gradual changes in species over time. Other evidence includes comparative anatomy, biogeography, and molecular biology.
6) Darwin was originally studying to become a clergyman.
8) Before his famous voyage, Darwin believed that species were fixed and unchanging.
9) Lamarck's hypothesis of evolution with giraffes was that they had stretched their necks over time in order to reach higher leaves on trees.
11) Darwin compared the fossils he found in South America to living species of armadillos.
16) Humans do not reproduce unchecked because of environmental factors such as limited resources, competition, and predation.
17) Darwin made an association to Malthus's idea of natural selection, which states that organisms with advantageous traits are more likely to survive and reproduce.
20) Darwin's theory of evolution was not accepted in the mid-1800's, as it was seen as a challenge to the religious beliefs of the time.
21) Darwin's theory has been changed with new research, such as the discovery of DNA and the development of the modern evolutionary synthesis.
Charles Darwin- Evolution?
2) Where does variation occur within an organism that causes evolution?
5) What is the main source of evidence for evolution?
6) What was the occupation that Darwin was originally studying for?
8) What did Darwin believe about species before he went on his famous voyage?
9) What was Lamarck's hypothesis of evolution with giraffes?
11) What animal did Darwin compare fossils to that he found in South America?
16) Why do humans not reproduce unchecked?
17) What association to Malthus's idea did Darwin make?
20) Was Darwin's theory of evolution accepted in the mid-1800's?
21) How has Darwin's theory been changed with new research?
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1 answer