What is the difference between an allele and a locus


Genetics Questions:

Please answer and explain in detail.

Question 1: Why is it necessary to perform PCR on DNA obtained from a crime scene?

Question 2: What is the difference between an allele and a locus?

Question 3: Why do forensic labs analyze non-coding DNA and not genes?

Question 4: There are 13 loci used when performing DNA fingerprinting yet the karyotype in Figure 2 shows 15 loci. Identify which two loci are not used for fingerprinting purposes and why they are highlighted on the karyotype.

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Biology: What is the difference between an allele and a locus
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