The two daughters because there chromosomes are xx and a males chromosomes are xy
In diseases, similar patterns of mutations in harmless genes may possibly be a cause or an effect of the disease. To investigate if it is a cause, it is worth looking into the proteins synthesized by the gene and whether it’s structure or functionality is affected by the pattern observed. It is also worth looking into the downstream effects possibly caused by the pattern in the gene. The gene may encode a non coding region which could affect post transcriptional splicing for example.
The right answer is geology; theory of continental drift.
The drift of the continents is a theory proposed at the beginning of the century by the physicist-meteorologist Alfred Wegener, to try to explain, among others, the similarity in the course of the coasts on both sides of the Atlantic, an observation which had intrigued others before him.
He possessed, besides, the courage, the fever of knowing, the independence, the intellectual rigor, the logic and a good dose of intuition. Armed with all this baggage, he was able to formulate a hypothesis on the movement of continents.