Answer: alternative D.
Explanation: For the DNA to have the double strand structure, it is necessary to copy the sequence of the existing DNA strand in a complementary sequence of nucleotides, forming hydrogen bonds between them. The mRNA also uses this strategy when reading the DNA strand during the transcription, in order for the translation to begin.
Answer:
C genetic drift
Explanation:
variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.
Answer: to answer a research problem.
Hypothesis is a temporary prediction about how a research outcome will be like. It also called educated guess because you need to have a reasoning to support your prediction. Hypothesis doesn't have to be true since it only a guess.
True, because the fossils of animals that ,for example, are similar to humans show us the different stages that the species went through, what it looked like, and gives us a good idea of how similar it was becoming to us.
