Textbook Notes (280,000)
CA (170,000)
UTSC (20,000)
Chapter 1 & 3

BIOB51H3 Chapter 1 & 3: BIOB51H3 Chapter 1 & : BIOB51H3 Chapter 1 &: BIOB51H3 Chapter 1 : BIOB51H3 Chapter 1 : BIOB51H3 Chapter 1 : 4


Department
Biological Sciences
Course Code
BIOB51H3
Professor
Maydianne Andrade
Chapter
1 & 3

This preview shows half of the first page. to view the full 2 pages of the document.
BIO B51
Defining Adaptation
o An adaptation refers to an inherited trait that makes an organism more fit in its
abiotic and biotic environment, and that has risen as a result of the direct action
of natural selection for its primary function
Adaptations and Fit to Environment
o To be considered an adaptation, a trait must have been shaped by natural
selection to serve the same primary function or functions that make it beneficial
today
o Exaptations
o A trait that serves one function today but may have evolved under
different selection conditions and served a different function in the past
WEEK TWO
Chapter 1: An Overview of Evolutionary Biology
1.2: Empirical and Theoretical Approaches to the Study of Evolution
Empirical Approaches
o Empirical work in evolutionary biology almost always falls under one of two
categories:
o Observations
You're Reading a Preview

Unlock to view full version