What did Darwin say about the eye?

Summary: When Darwin’s skeptics attack his theory of evolution, they often focus on the eye. Darwin himself confessed that it was “absurd” to propose that the human eye evolved through spontaneous mutation and natural selection.

What evidence did Darwin have for natural selection?

Anatomical Evidence These physical changes were necessary for the survival of the finches. Darwin noticed the birds that did not have the right adaptations often died before they were able to reproduce. This led him to the idea of natural selection. Darwin also had access to the fossil record.

What experience opened Darwin’s eyes to the idea of evolution?

Beagle on an exploratory survey. During the next five years, the Beagle toured the South American coasts, the Galapagos Islands, New Zealand, Australia and South Africa. The voyage was an eye-opening experience for Darwin. He collected, sketched and made notes of fossils, and a wide assortment of living organisms.

How could the eye have evolved?

Scientists think the earliest version of the eye was formed in unicellular organisms, who had something called ‘eyespots’. These eyespots were made up of patches of photoreceptor proteins that were sensitive to light. Over time, the unicellular creature would evolve, and its eyespot evolved along with it.

What was most likely the first step in eye evolution?

What was most likely the first step in eye evolution? A flat patch of light sensitive cells. What was most likely the second step in eye evolution? Eyes became cup shaped.

Which of the following statements about the observation of the evolution of beak morphology in Darwin’s finches is accurate?

According to Darwin, what is a species? Darwin’s theory of evolution by natural selection states that the _________ better suited to their particular environment will be more likely to reproduce successfully. Why did Darwin discount discontinuous variation as an important part of the process of natural selection?

What causes eyes to evolve?

Scientists believe a depression formed around the light sensitive spot, creating a pit that made its ‘vision’ a little sharper. Eventually, the pit’s opening could have gradually narrowed, creating a small hole that light would enter, much like a pinhole camera.

Why is it incorrect to say vertebrates evolved eyes in order to see?

Why is it incorrect to say: Vertebrates evolved eyes in order to see? As a result, each mutation required to produce the eye must have made those individuals (relative to others without the mutations) more fit. Relative to the less fit individuals, they survived better and produced more offspring.