Dna evidence is typically easy to find at a crime scene.
a. true
b. false

B) False

Explanation:

False is the answer, ¨DNA profiling¨ (  analizes and uses all the evidences regarding DNA) is an effective procedure for forensic and criminalistic purposes, and more keeping on mind the advanced technology we do have on present days. However is common to deal with DNA samples in precarious conditions, and more when are taken directly from a crime scene, that normally provides degraded evidences.

That´s why sometimes an investigation process lasts considerable amounts of time, since all these complex processes are not easy to be made, when the evidences are not in a good condition.

So DNA can be obtained from different sources, like blood, fingerprints and even hair (that is not too common to found it in a crime scen from the victimizer), the main issue is the utility of the evidence, that sometimes when the conditions are not too favorable, are worthless.

this question does't support enough resioning to answer.

the first question's answer is a.