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 15, Problem 6TY
Summary Introduction

Introduction:

The pedigree chart can be used to depict the complete history of patterns of inheritance of disease from one generation to the next generation. A recessive allele is a type of allele that can only create a phenotype in homozygous condition.

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In a pedigree, which of the following shapes indicates a male individual?   Circle   Square   Diamond
Consider an autosomal dominant trait with reduced penetrance and complete expressivity. What might you expect to see on a pedigree diagram for a family with all affected individuals may not have an affected parent (the trait appears to skip generations).   more than one of the options listed here  affected males always pass the trait to daughters but never to sons  only one sex displays the trait  all affected individuals have an affected parent (the trait does not appear to skip generations)
Which of the following would not be observed in a pedigree if agenetic disorder was inherited in a recessive manner?a. Two unaffected parents have an affected offspring.b. Two affected parents have an unaffected offspring.c. One affected and one unaffected parent have an unaffectedoffspring.d. All of the above are possible for a recessive disorder
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