What is indicated by an extremely large calculated value of Chi-square in a one-way Chi-square test?

a. There is a perfect match between the observed frequencies in the sample and
the null hypothesis
b. The observed frequencies in the sample are very different from the expected
frequency
c. The observed frequencies in the sample are very similar to the expected
frequency
d. None of the above

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

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step-by-step explanation: