A brother and sister share ________ percent of their genes.

A) 10

B) 25

C) 50

D) 100


C) 50

Biology & Microbiology

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If a pollen grain lands on the stigma of a plant that is not related to that plant then the following would happen:

A. The pollen grain would be too large or too small to enter the stigma. B. The pollen would likely not attach to the stigma. C. The pollen grain would be unable to grow through the stigma. D. The pollen grain would be unable to form sperm nuclei. E. The pollen grain would be ejected from the stigma.

Biology & Microbiology

In arthropods, locomotion is accomplished by muscles that work against  

A.  each other. B.  the exoskeleton. C.  a hydrostatic skeleton. D.  mineralized bones. E.  the pseudocoel.

Biology & Microbiology

Without your glasses, the world is a blur, but you’ve discovered that if you squint your eyes, you can see well enough to read, at least for a few minutes. What condition do you suffer from?

a. presbyopia b. hyperopia c. myopia d. astigmatism

Biology & Microbiology

Which of the following is not a genus of Betaproteobacteria?

A) Bordetella B) Chlamydia C) Leptothrix D) Thiobacillus

Biology & Microbiology