Evolution:
Scientific theory of evolution emerges from different
lines of evidence:
Fossil records
Modification by descent
Evidence from biogeography
Genetics
As well as other forms.
1. Origin of an idea about origins:
What is evolution?
Gradual change or development of something.
Can be used in various sense in social or economic structures and general
use.
What is biological evolution?
change in gene pool of a population during course of time by such processes
as mutation, natural selection, and genetic drift.
Descent with modification.
Covers micro-evolution (within species) and macro-evolution (decent of diff.
species from common ancestor over many generations).
Why is it so important that we know about biological evolution?
Biological evolution:
- Has become unifying concept that acts as a foundation for understanding all
Biology
- Supports and explains many aspects of our everyday lives.
- Challenges people to really think for themselves.
How did life originate?
Current scientific opinion is that there was a single origin of life – this idea is
supported by the fact that all life shares the same genetic code and similar
basic enzymes, but science is still a long ay off from explaining how life
originated.
What is certain is that life on earth appeared very early – about 3.7 mya.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller kylaboyd-davison. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.64. You're not tied to anything after your purchase.