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Biology Essay

Lesson 3 Essay Questions
Examination Examination
You have two examinations for Lesson 3. The first is a
multiple-choice examination. The multiple-choice exam
comes before this assignment on the student portal and
should be completed first. The second part is this essay
exam, which follows. Please type your answers into a
Word file and name the file with your name and the
exam number. For more information, you can view the
Overview webinar. The essays are the second assignment
covered. You can register for the live webinar through
the Biology course, or you can watch the recording. To
view the recording, visit the Penn Foster Virtual Library
(
Choose College, Biology, Recordings, and choose the
Overview webinar in the Google document.
Questions 1 4: Answer the following essay questions
in 1 2 short paragraphs each. 1. Compare and contrast directional selection and disruptive selection and provide an example of each. 2. Many pathogenic bacteria species are becoming resistant
to antibiotics. Explain how such adaptations can develop
through the process of natural selection. (Hint: Relate
this example to the conditions that are necessary for natural selection to occur.)
3. What are the major evolutionary trends that developed
among major vertebrate groups, specifically those that
allowed for the transition from aquatic to terrestrial life? 4. Providing examples, explain how sexual reproduction in
plants has evolved to become less dependent on water.

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