1. What does factor analysis do?
-Factor analysis helps explain the relationship between variables using
questionnaires. The questions are made of multiple items in which you get
different responses from a single person, or organis
What is a species?
Groups of interbreeding organisms
Are they real?
What do species represent, biologically
Many different opinions on the reality of species
Two basic options:
Species are real
Species are constructs of the human mind
Pre-class questions for CRLF case study
1. California red legged frog larvae and tadpoles have high mortality rates
because theyre vulnerable to fish predation. Adults have a lower
2. The take home message from Matthews 2003 and Rathbun an
Concepts and Theory
1. A populations sex ratio is the amount of males compared to females.
Wildlife biologists use this to determine the stability of a population, in
relation to how many sexually reproducing individuals are actuall
Point and Line Transects: Discussion Questions
1. How did the methods differ? Which was more user friendly and why?
-The methods differed in the physical way they were performed. I thought that
the point count was more user friendly because it didnt invol
-Annual: A plant which germinates from seed, flowers, sets seed and dies within the
-Biennial: A plant which lives 2 years; usually forming a basal rosette of leaves the
first year and flowers/fruits the second.
-Perennial: A plant that
Exam 1 Review
-Reconstructing phylogeny gives us a mean to classify things based on
-Phylogenies are built upon organisms relationships between each other
-Value of systematics: predictive nature (where things belong, what att