Summary
Summary IB_BIOLOGYSYLLABUS2025_A.4.1_evolution
- Course
- Institution
Master the Science of Evolution with Our Ultimate Speciation Notes!
[Show more]
Seller
Follow
mireiavicente
Content preview
IB_BIOLOGYSYLLABUS2025_A.4.1Evolution as Change in Heritable
Characteristics of a Population
Key Concepts
Evolution refers to the gradual change in the heritable characteristics of a population
over successive generations. This change leads to biodiversity and the adaptation of
species to their environment, shaping the evolutionary tree of life. One of the most
influential theories of evolution is Darwinian evolution, which is based on the
concept of natural selection.
Learning Outcomes
By the end of this section, you should be able to:
● Define evolution as the change in the heritable characteristics of a
population.
● Discuss the theory of natural selection.
● Differentiate between Darwinian evolution and Lamarckian evolution.
What is Evolution?
Evolution is the process by which populations of organisms change over
generations. These changes are driven by alterations in genetic information that are
passed from one generation to the next.
For example, neck elongation, one of the oldest human body modifications, doesn’t
result in a genetic change. Despite generations of following this practice, it does not
lead to a longer neck in offspring. This is an important distinction in evolution: only
heritable traits (passed down through genetic information) evolve, not physical
changes acquired during an organism's lifetime.
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 mireiavicente. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.77. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
61005 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now