Answer:
The answer is C
Explanation:
Something changed to limit and finally abolish their success in this environment.
Ideally, the data would be shared with other scientists in the form of a research paper submitted to a respected scientific journal in a relevant field. After the paper would be published, more scientists should be able to replicate these results and if their results point in the same direction - that indeed a drug that treats thyroid cancer has been found, then the next step would be to gain ethical approval and test the drug on animals.
So in summary, it would be best to do D first and C second.
Answer:
The correct option is C.
Explanation:
According to Darwin's Law of Natural Selection, a gene that benefits the organism and helps it produce healty offspring so that it can survive is supported by natural selection and will receive a positive feedback over.
The fact that the heterozygosity for sickle cell anemia helps with the survivability of malaria, which is a deadly disease, suggests that the heterozygosity is favored by the law of natural selection.
I hope this answer helps.