Well first, he searches the forests for a lizard. Once he finds one, he grabs it and gets a sample of its DNA. He then sends it back to the science lab for positive identification. Hoped this helped, had to check a few different websites for the answer!
Sample lizard on the timber bench
he showed her an egg sample
if all the daughters have the same parents the logical answer is 2 parents making it appproximately 11.765% Or if the parents were not present in the sample O%
A core sample of a mineral
I think you should resubmit this question as How long can you leave a sample in a desiccator? and it would help if you gave information about what sample you are putting in.
Sample lizard on the timber bench
Mica
feldspar
It usually takes 10 to 12 different restriction enzymes to produce a fragment pattern. This will allow positive identification of an individual.
To produce enough copies of a DNA sample, that identification can be made of the source of the DNA sample.
It can have either a negative or positive trend
sometimes!
Split sample drug test? It depends.If what you're asking is, "I was positive because I was doing drugs; are the drugs going to leave my sample after 19 days?" the answer is that you'll still be positive. They freeze the second part of your sample, so there's no way anything could get out of it--and the drug metabolites in the sample wouldn't leave the sample anyway.If, OTOH, you're asking "I got a false positive for grass because I was taking ibuprofen (Advil is famous for crossreacting with THC on dip-stick tests, which is one of the reasons I hate dip-stick tests); should I have the second sample tested?" go for it. If they test the second sample on GC/MS, which is the normal way for split-sample tests, it will be able to tell the difference between Advil and weed.
lipids
It depends on how the first sample was tested. If the first half was tested on a dipstick test and you KNOW you haven't been doing drugs--say, you're taking naproxen sodium for knee pain and you come up positive for marijuana (naproxen cross-reacts with the THC test), testing the split sample with GC/MS should clear you. OTOH, if you smoke weed and your first sample came up positive on GC/MS, assume the split sample will also be positive.
if your child is negative, i would ask for a blood sample from the mailman
a