BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 14, Problem 1SL
Summary Introduction

To determine:

The possible evolutionary consequences to other species due to the extinction of one species

Introduction:

There are two types of extinction events which occur in the ecosystem. The background extinction results due to the normal evolutionary process. Mass extinction of species occurs due to the disappearance of a large number of species in a relatively short time.

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Part 1: Use this image to describe the relationship between H, F. and D, including how closely they are related to each other, and determine the most recent common ancestor for these species. Part 2: Using the above image, estimate how long ago the common ancestor for H, F, and D lived. Part 3: Of species H, F, and D, which have gone extinct without producing any evolutionary descendants? Provide evidence to support your answer.
Topic: Galapagos Finches Darwin’s readings took him to a predictive theory of how species might change with time: what later thinkers have called microevolution. Darwin’s philosophical worldview then took him beyond his evidence to a conviction that environmental constraints could create whole new structures and organisms. Soon Darwin’s theory of macroevolution replaced the Creator with an environment that could create solely by constraint. For your thread: According to Chapter 13 section 13.1, define microevolution and macroevolution. The Galapagos islands have a great diversity of landscapes – from lush vegetation to nearly barren lava fields yet the Galapagos Finches survive on each island. How can this be explained? Using the varying bills of the Galapagos Finches in figure 13.3 and additional research, explain how microevolution is evidenced.
What Have I Learned So Far? Write True if the statement is true. If false, change the underlined word or phrase to make the statement true. 1. Charles Darwin coined the term “survival of the fittest." Fossils can be used in determining the remains of ancient organisms. 2. 3. Geology is the study of the distribution of plants and animals on Earth. 4. Lamarck proposed the theory of use and disuse. 5. Genetic mutation accounts for evidence of evolution. 6. The theory of acquired characteristics is the concept of Wallace. 7. Vestigial organs are structures that have a particular use before but have no particular purpose for existing animals. 8. The similarities of the embryos of vertebrates indicate a common ancestral domain among them. Biochemical evidence does not provide a solid proof of evolution. 9. 10. Anatomy of animals can be used as evidence of evolution Biodiversity and Systematics: Evolutionary Relationships 179
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