I would have to say (D.) if it's been 150 years.
Answer:
well in my view science is a technology without it we hadn't be sucess
I’m pretty sure it’s the refractory period!!
Hope this helps!
Explanation:
The cell must be lysed (broken open) to release the nucleus. the nucleus (if present) must also be open to release the DNA. at that point the DNA must be protected from enzymes that will degrade it, causing shearing. [[ once the DNA is released, it must then be precipitated in alcohol...]