A biodiversity hot spot is an area that

1.has a large number of endemic species.
2.is found in warm tropical regions.
3.is at risk due to global warming.
4.is considered a high priority for conservation efforts.


4

Biology & Microbiology

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Gehring tested the hypothesis that the Pax6 gene acts as a master regulator of eye development by engineering Drosophila Pax6 genes to be expressed in Drosophila antennae. What happened, and did it support or refute his hypothesis?

A. A compound eye developed on the antenna; this supports the hypothesis. B. A compound eye developed on the head; this supports the hypothesis. C. The antenna developed normally; this falsified the hypothesis. D. The antenna developed where the eye normally would be; this supports the hypothesis. E. The antenna developed where the eye would normally be; this falsified the hypothesis.

Biology & Microbiology

What is the greatest risk factor for cancer?

a. family history b. age c. environmental toxins d. diet e. physical inactivity

Biology & Microbiology

Which of the following situations would be best for growing most plants?

a. a soil with very small air spaces b. a soil with relatively large air spaces c. a soil with air spaces filled almost entirely with water d. a soil with various sizes of air spaces

Biology & Microbiology

Which of the following features enable organisms like planarian to respire and exchange nutrients?

A. a trilobed gastrovascular cavity B. coelomic fluid C. an open circulatory system D. closed circulatory system

Biology & Microbiology