Complementation Tests: Alleles, Crosses & Loci


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What is a complementation test?

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1. Two different mutations within the same gene are in the same _____.

2. If two pure-breeding tailless hamsters were crossed, and all the progeny were tailless, then which of the following is TRUE?

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About This Quiz & Worksheet

Test your understanding of recessive genes in this quiz and accompanying worksheet on complementation. Practice questions assess your understanding of complementation tests, complementation, and recessive genes.

Quiz & Worksheet Goals

This quiz and worksheet will test your comprehension of:

  • Alleles
  • Pheontoype
  • Recessive genes
  • The definition of a complementation test

Skills Practiced

This assessment helps you practice the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson on complementation tests
  • Making connections - use understanding of the concept complements
  • Interpreting information - verify that you can read information regarding genetic expression and interpret it correctly
  • Defining key concepts - ensure that you can accurately define main phrases, such as alleles, phenotype, mutations, and recessive

Additional Learning

To learn more about genetic mutation and gene expression, review the lesson on Complementation Tests: Alleles, Crosses & Loci. This lesson covers:

  • Complements
  • Complementation tests
  • Complementation groups