topic 6 - infection, immunity, and forensics

Question 1

what are the 4 fingerprint patterns?

Answer 1

arch, tented arch, whorl, and loop

Question 2

what are the 3 methods of making fresh fingerprints visible?

Answer 2

1. using aluminium, iron, or carbon powders that stick to the print
2. using superglue, which reacts with the water and other substances left by the print
3. using ninhydrin, which reacts with the amino acids in sweat

Question 3

if an individual has no fingerprints on record, what may be another method of identifying them?

Answer 3

dental records (or DNA profiling)

Question 4

what is an intron?

Answer 4

non-coding blocks of genes - intragenic region

Question 5

what is an exon?

Answer 5

any genes within the coding region - expressed region

Question 6

what is an STR?

Answer 6

short tandem repeat - sequences of repeated bases within introns - can contain from 2 to 50 base pairs and can be repeated 5 to several hundred times