This document provides an overview of key topics in biology, including the history of microscopy, cell theory, Darwin's theory of evolution by natural selection based on his observations of finches on the Galapagos Islands, the origin of species, and the discovery of the double helical structure of DNA through the work of Maurice Wilkins, Rosalind Franklin, James Watson, and Francis Crick. It also mentions that Watson and Crick shared the 1962 Nobel Prize with Wilkins for their discovery of the DNA structure.

1. Bio101 – Tutorial 1
11/08/2017

3. History of Biology

4. Timeline of Microscopy

5. Cell Theory and Microscope

7. Evolution: The gradual development of something
over time

8. Darwin’s Trip to Galapagos island!
Trip to Galapagos!
-collected birds (finches) from isolated
island patches
-studied them, trying to fit them under
different species.
-concluded that all the finches are from the
same common ancestor, have diverged
and survived depending on their fitness to
the niche.

9. Origin of Species - 1859
Darwin came up with the theory of
evolution - natural selection driven!
The traits which occur by the pressure
of ‘survival of the fittest’ are heritable.
What still was a major question was
that how these traits are transmitted
and remain stable.

13. https://www.youtube.com/watch?v=Mehz7tCxjSE

15. Common element of
Life!

16. Maurice Wilkins and Rosalind Franklin used X-ray
crystallography to study the structure of DNA.

17. ●For their outstanding work in
discovering the double helical
structure of DNA, Watson and
Crick shared the 1962 Nobel
Prize for Physiology and
Medicine with Maurice Wilkins.