What evidence supported the hypothesis that differences in the ALX1 gene were responsible for beak differences in Darwin's finches? Please select all that apply.

Question

Quizplus · Accepted Answer

While it is true that the ALX1 sequence was found in all the finch sequences, this is not evidence to support the role of ALX1 in beak shape because the differences in sequence in ALX1 between the different species are critical, not whether the gene is present or absent. All other options are supportive of the hypothesis. It is important to note that each piece of evidence is not strongly supportive on its own. For example, many other genes were found in regions that correlated with beak size. However, when this and other evidence was taken together, the overall suggestion that ALX1 was involved in beak size was strongly supported (but still not proven).

What Evidence Supported the Hypothesis That Differences in the ALX1