Posted on 10/11/2013 5:08:23 PM PDT by xzins
When I took genetics in community college, we cultured our own blood cells and treated them with colchicine to prevent them from undergoing mitosis, although the DNA was still replicating. We then made karyotypes of our own chromosomes, once they were nice and fat from replicating without dividing for several rounds. My karyotype matches my phenotype. :)
I read recently of a biology teacher who has stopped having his students do genetics experiments on themselves, because the chance of students learning something shocking was too high (about one student per class was unaware of something major, e.g., that his father is someone other than he believed, etc.). He switched to having them study the genetics of cats, since every student knows or owns cats and nothing they find out about their test subjects will be shocking.
Yeah, I used to conduct labs when I was a Teaching Assistant and ran into that a few times. Mom and dad are blood type O and the student is A.
Even had one who must have been adopted but didn’t know it.
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