Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 11.2, Problem 6MC
Summary Introduction

To explain:

The use of STRs (short tandem repeats)in DNA profiling.

Concept introduction:

DNA (deoxyribonucleic acid) profiling is the technique of chemical fragmentation of DNA into unique patterns and matching the pattern that is identified with that obtained from the sample. STRs are short tandem repeats are regions of nucleotide sequences which repeat more than one time in the non coding regions of DNA. The number STRs vary from individual to individual.

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There is a species of eagle, which lives in a tropical forest in Brazil. The alula pattern of its wings is determined by a single autosomal gene with four alleles that exhibit an unknown hierarchy of dominance. Genetic testing shows that individuals 1-1, 11-4, 11-7, III-1, and III-4 are each homozygous. How many possible genotypes among checkered eagles in the population?

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