Inside the Crime Lab: Forensic Biology DNA Unit

[@levida7765]

I am starting an undergraduates degree in forensic science with the hope of a career in forensic biology and also found this video very interesting and informative

[@euphoria6938]

Thinking of working in a forensic biology unit. Fascinating stuff! Great vid.

[@ivyfoxillustration]

Very informative! The bit about hair follicles and their roots was really striking to me

[@oliviapereira364]

Hello! In forensics, how can one sequence DNA from sperm and compare the result to a suspect if gametic cells have a different DNA than somatic cells (due to crossing over of gametic cells)? How can one know what to look for if that's not the same sequence?

[@badiah34]

It is due to the loci tested in STR analysis. The haploid cells still have the 23 chromosomes which contain the loci used in autosomal STR testing. Like, a sperm cell will still have a chromosome 11 with the TH01 marker.

[@studiomg3212]

@@badiah34 ahh so certain loci that do NOT partake in crossing over/genetic recombination are selected for analysis as those genetic markers will remain constant between their haploid and diploid variations, correct?

[@amirtaufiq797]

If I found blood from 2 different places, can I identify both from same or different person/identity?

[@yorunoakuma7317]

Yes you can identify a person with blood, if it was the answer you was waiting for. You'll know if it the same, person or not.

[@MK-ji7cf]

No hair net

[@conorfinn1109]

Yooo who else is here for mrs Jamison’s human body systems class 😈😈😈