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The Influence of Sex-Linked and Polygenic Inheritance on Development

Instructions:

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

question 1 of 3

Polygenic traits are controlled by _____.

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1. Why are Y-linked traits only inherited by males?

2. Why are X-linked traits expressed more often in males than females?

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About This Quiz & Worksheet

Why are more men than women colorblind? Why are some genetic traits passed only to sons, or only to daughters? This quiz and worksheet combination will check your understanding of sex-linked and polygenetic genetic influence, including the occurrence of recessive trait inheritance and conditions that can affect the construction of our 25,000 genes.

Quiz & Worksheet Goals

This quiz will test you on the following:

  • Definitions of key terms
  • X- and Y-linked traits
  • Dominant and recessive traits
  • Characteristics of sex-linked and polygenetic inheritance

Skills Practiced

Students will practice these skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson on sex-linked and polygenetic inheritance
  • Distinguishing differences - compare and contrast topics from the lesson, such as sex-linked and polygenetic inheritance
  • Knowledge application - use your knowledge to answer questions about genetic traits

Additional Learning

Read the lesson on sex-linked and polygenetic trait inheritance to learn more about this topic. The lesson, together with this quiz and worksheet, contains the following objectives:

  • Describe why only males receive Y-linked traits
  • Explain how having two X chromosomes in the 23rd chromosomal pair can suppress recessive traits
  • Detail process by which traits are determined through polygenetic inheritance
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