How Sex is Determined in Drosophila

Instructions:

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

question 1 of 3

A fruit fly has two X chromosomes and two sets of autosomes. Which of the following would be the sex of the fruit fly?

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1. A fly has one X chromosome, a Y chromosome, and two sets of autosomes. Which of the following best explains why this fly would be categorized as a male?

2. A fly has the following chromosomes: 1 X, 3 Y, and 3 sets of autosomes. Which of the following is the sex?

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About This Quiz & Worksheet

Drosophila sex determination is a helpful concept to know in the study of gene expression, and this quiz/worksheet will help you test your understanding of its significance and implications.

Quiz & Worksheet Goals

In these assessments, you'll be tested on various aspects of Drosophila gene expression, including:

  • The sex of Drosophila flies based on chromosomes and autosomes
  • Types of chromosomes
  • The implications of chromosome to autosome ratios

Skills Practiced

This quiz and worksheet allow students to test the following skills:

  • Reading comprehension - ensure that you draw the most important information from the lesson on the genetic implications of chromosomes and autosomes in Drosophila flies
  • Distinguishing differences - compare and contrast the significance to sex determination of different sets of chromosomes and autosomes in Drosophila flies
  • Information recall - access the knowledge you've gained regarding the types of fly chromosomes and the significance to chromosome to autosome ratios

Additional Learning

To learn more about genetic expression in Drosophila flies, review the accompanying lesson How Sex is Determined in Drosophila. This lesson covers the following objectives:

  • Differentiate between sex chromosomes and autosomes in both humans and flies
  • Understand how sex is determined in Drosophila flies
  • Understand the significance of chromosome to autosome ratios in Drosophila flies
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