Inbreeding: Definition and Effects


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question 1 of 3

How do inbreeding and outbreeding differ?

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1. Many genetic disorders, such as cystic fibrosis, hemophilia, and sickle-cell anemia, are caused by which genotype?

2. Which individual(s) in this pedigree is/are inbred?

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About This Quiz & Worksheet

This quiz and worksheet combo gauge your understanding of the differences between inbreeding and outbreeding in addition to the genetic problems resulting from inbreeding. To successfully pass the quiz, you should be familiar with topics such as homozygotes, heterozygotes, and why inbreeding occurs on purpose.

Quiz & Worksheet Goals

Utilize these assessment tools to test your knowledge of the following:

  • Relationship between inbreeding and homozygotes and outbreeding and heterozygotes
  • Results of inbreeding portrayed through a pedigree
  • Definition of inbreeding
  • The cause of genetic disorders related to inbreeding
  • Reasons for inbreeding occurring on purpose

Skills Practiced

You will practice the following skills as you complete the quiz and worksheet:

  • Distinguishing differences - compare and contrast topics from the lesson, such as outbreeding and inbreeding
  • Making connections - understand how the homozygous recessive genotype causes certain genetic disorders
  • Knowledge application - use your knowledge to answer questions about inbreeding that occurs on purpose

Additional Learning

To learn more about the effects of inbreeding on living things, check out the related lesson. It covers objectives such as:

  • Define inbreeding and outbreeding
  • Identify the genetic benefits of outbreeding
  • Understand how inbreeding increases the risk of genetic disorders like hemophilia, cystic fibrosis, and sickle cell anemia
  • Discover the reasons for and problems with inbreeding in agriculture and animals