Question

1.How did Darwin’s Beagle voyage lead to the concept of natural selection? What are some key points?

2.What is gene flow? How is this important to recovering from genetic drift?

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Answer 1

Answer 1:

It was in 1831 when chales Darwin went on a voyage which was having a reason behind on a ship called the HMS Beagle. During his travelling he was fascinated by the varieties of nature and he sent 3 years in exploring the nature on far islands and places.

Darwin’s Observations

During the voyage in HMS beagle, Darwin made many observations that helped him to come up with his theory of evolution. For example:
1. He visited rain new habitats and forests he saw need species of plants and animals which were not seen by him before.
2. During his voyage he experienced an earthquake that raised the ocean floor above sea level.
3. He also searched some fossil sea shells in mountains high above sea level.
4. By observing the fossils and rasing of ocean floor he pbserved that the continents and oceans had changed and are changing very much that continents and oceans had changed dramatically over time and continue to change in dramatic ways.

5.On his voyage he went on some islands known as Galapagos Islands. In these islands he found that these these island differ from one another in their soil and species of animals and plants
From here Darwin thought about the origin of species. He wondered how each island came to have its own type of tortoise.
He found that Galapagos tortoises have differently shaped shells depending on which island they inhabit. Tortoises with saddle-shaped shells can reach up to eat plant leaves above their head.

6. He also found bird species have developed different beaks based upon these mode of habitat and food avialable to them on different islands