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...]
Answer: The answers are fossil records, DNA evidence and case studies
Explanation
ultra violate radition
UV is an environmental human carcinogen. It’s the most prominent and universal cancer-causing agent in our environment. There is very strong evidence that each of the three main types of skin cancer (basal cell carcinoma, squamous cell carcinoma and melanoma) is caused by sun exposure. Research shows that as many as 90% of skin cancers are due to UV radiation.
A
researcher was performing a test to check the effect of induced point
mutation. But the experimental mouse could not survive. The reason
for this is a lethal mutation. This is a mutation in which the
effects can result in the death of an organism carrying the mutation.
It is also known as lethal factor or lethal gene.
<span>I
hope it helps, Regards.</span>
