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FDSCI 101 Day 19

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Richard Datwyler

on 16 October 2013

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Transcript of FDSCI 101 Day 19

Welcome Back
Things to think about?
Descent with modification
Homologous/analogous structure
Three things are needed for speciation
Reproductive Isolation
What is a species?

Or what makes different species?
Mechanisms for Reproductive Isolation
Gametic Isolation
Hybrid inviability
Ecological / temporal
Test review question 1

Which of these shares a closer common ancestor to an Ameoba (kingdom protista)
A. Polar bear
B. Dinosaur
C. Fish
D. Grasshopper
E. All have the same common ancestor with a ameoba.
Test question 2.
This picture of mammalian fore limbs
is an example of
A. Homologous features
B. Analogous features
Test question 3
In microevolution mechanics, the bottle neck effect is an example of
A. Mutation
B. Gene Flow
C. Genetic Drift
D. Nonrandom Mating
E. Natural Selection
Do these phrases adequately classifly how evolutionary processes take place? For example
The salemanders in the coastal areas were more blue collored, because....
Need to...
Desire to...
Adapted to...
Full transcript