Segmentation Genes in Drosophila Development: Pair Rule, Segment Polarity & Gap Genes


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question 1 of 3

Which type of genes are expressed in alternating bands?

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1. A scientist is studying a mutant fly, and notices that a large portion of its body developed incorrectly. Which type of segmentation gene is most likely faulty?

2. Overall, what do segmentation genes generally control?

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About This Quiz & Worksheet

The quiz will test you on definitions related to pair rule, segment polarity, and gap genes. The questions will provide you with a definition, and you will need to select the correct term. Other questions will give you an example of a mutant organism. You will need to identify the correct faulty gene.

Quiz & Worksheet Goals

The quiz covers these terms:

  • Pair rule
  • Segment polarity
  • Gap genes
  • Segmentation genes

Skills Practiced

You will practice these skills:

  • Reading comprehension - ensure that you draw the most important information from the related pair rule, segment polarity, and gap genes lesson
  • Critical thinking - apply relevant concepts to examine genetic information in a different light
  • Interpreting information - verify that you can read information regarding gap genes and interpret it correctly
  • Information recall - access the knowledge you've gained regarding the pair rule
  • Knowledge application - use your knowledge to answer questions about segmentation genes

Additional Learning

The related lesson on pair rule, segment polarity and gap genes details the various nuances of the concepts on the quiz. The lesson covers the following objectives:

  • Defining segmentation genes
  • Understanding the role of gap genes
  • Examining when pair rule genes are expressed and their function
  • Explaining segment polarity genes
  • Clarifying the role of segmentation genes by examining the body of a fruit fly