Instances in which cells die shortly after they are produced in development illustrate:a
morphogenesis.
b. mosaic development.
c. apoptosis.
d. non-specific differentiation.
e. caspases.
c
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What is the largest single source of radiation exposure for the average person in the U.S.?
a. radon b. medical X-rays c. cosmic d. nuclear medicine e. consumer products
Based on the answer to the previous question, what phenotypic ratio of red and orange eyes is predicted in the offspring of the F1 male (orange eyes) and female (red eyes)?
A: 3/4 red eye & ¼ orange eye for both sexes. B: ½ red eye & ½ orange eye for both sexes. C: All red eye males; ½ red & ½ orange females D: All red eye females; ½ red & ½ orange eye males
For water transport in vascular plants, the cohesive property of water is most important in the
A) epidermis. B) xylem. C) internal air spaces. D) stomata.
The West African black rhino, one of four subspecies of rhinoceros, was declared extinct in 2006. Their horns were believed by many to hold medicinal value. What is the most likely reason for the extinction of the West African black rhino?
A. pollution B. habitat loss C. climate change D. introduced species E. overexploitation