Principles of Biology
Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 14.4, Problem 3TYK
Summary Introduction

Introduction:

 

Down syndrome is a condition, in which the development of the affected person is declined, which result in physical and mental abnormalities. It is caused be the presence of an extra 21 chromosome.

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