A condition that occurs as a result of the lower esophageal sphincter opening thus allowing food from the stomach to reenter the esophagus is called
What will be an ideal response?
heartburn
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Evolutionarily conserved molecules:
A. are similar in sequence among distantly related organisms. B. were likely present in the most recent common ancestor of the organisms possessing them. C. likely changed little over time because they serve a vital function. D. are similar in sequence among distantly related organisms and were likely present in their most recent common ancestor. E. are similar in sequence among distantly related organisms, were likely present in their most recent common ancestor, and have likely changed very little because they serve a vital function.
In four-o'clock plants, red flower color is dominant to white flower color. However, heterozygous plants have a pink color. If a pink-flowered plant is crossed with a white-flowered plant, what will be the phenotypic ratios of their offspring?
A. ¼ red, ½ pink, ¼ white B. All pink C. All white D. ½ pink, ½ white E. ½ red, ½ pink
Individuals who are heterozygous for sicklecell
anemia have a greater resistance to
a. malaria. b. diphtheria. c. cholera. d. typhoid fever. e. all of these
All of the members of the same species occupying the same area at the same time constitute a(n):
a. individual b. population c. community d. ecosystem e. biosphere