for Teachers for Schools for Enterprise
for Teachers for Schools for Enterprise
Course Navigator
Speciation: Allopatric and Sympatric SpeciationNext Lesson 

Natural Selection: Definition, Types & Examples

Chapter 18 /  Lesson 4   Transcript
Start Your Free Trial Today
Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Some studies have shown that a single copy of the cystic fibrosis disease allele can confer resistance to tuberculosis to a person. This is an example of:

Start Your Free Trial To Take This Quiz

As a member, you'll also get unlimited access to over 70,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Free 5-day trial
It only takes a few minutes to set up and you can cancel at any time.
Already registered? Login here for access
Worksheet
Natural Selection: Definition, Types & Examples Worksheet

1. A scientist has observed animals in a particular habitat for some time. She notices that the slowest gazelles tend to fall victim to predators more frequently than faster ones. Over time, she notes that the gazelle herd on average runs faster. She is observing:

2. A scientist has observed animals in a particular habitat for some time. She notices that in a population of birds those with either short or long beaks can find more food than those with average sized beaks. Over time, she notices a higher proportion of birds in the population have either short or long beaks. She is observing:

Start your free trial to access this entire page
A premium account gives you access to all lesson, practice exams, quizzes & worksheets
Access to all video lessons
Quizzes, practice exams & worksheets
Certificate of Completion
Access to instructors
Create an account to get started Create Account

About This Quiz & Worksheet

Taking a look at what can give us the edge in life, this quiz and corresponding worksheet will help you gauge your knowledge of the types of natural selection. Topics you'll need to know to pass the quiz include understanding examples of heterozygote advantage and balance polymorphism as well as knowing when directional selection might come into play.

Quiz & Worksheet Goals

Use this printable worksheet and quiz to review:

  • Examples of heterozygote advantage and balance polymorphism
  • Examples of directional selection
  • Types of disruptive selection
  • Effects of stabilizing selection

Skills Practiced

This worksheet and quiz will let you practice the following skills:

  • Interpreting information - verify you can read information regarding the type of disruptive selection and interpret it correctly
  • Problem solving - use acquired knowledge to solve natural selection type problems
  • Reading comprehension - ensure that you draw the most important information from the related natural selction lesson

Additional Learning

To learn more about this scientific theory, review the corresponding lesson called Types of Natural Selection. This lesson will help you:

  • Understand what natural selection is
  • Identify the main types of natural selection
  • Describe the characteristics of each type
  • Explain the difference between directional and disruptive selection
  • Appreciate when an organism would have a heterozygote advantage
You are viewing lesson Lesson 4 in chapter 18 of the course:

 Back To Course

Biology 101: Intro to Biology

22 chapters | 151 lessons | 12 flashcard sets

Ch 18. Evolutionary Principles & Natural...
Ch 19. Earth's Timeline & Geological...

Explore our library of over 70,000 lessons

Browse by subject
Support