A person has a mutation in the gene for DNA uracil glycosylase. What is the most likely result of this mutation?
A. an increase in mutations
B. the inability to produce mRNA that has
uracil in it
C. the inability to produce mRNA that has
cytosine in it
D. Nothing. This enzyme is only involved in
silent mutations.
E. None of the answer options is correct.
A
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Which group of plants have phloem and xylem, seeds, flowers, and fruit and in many cases require animals for reproduction?
A. liverworts, hornworts, and mosses B. ferns, club mosses, horsetails, and whisk ferns C. ginkgo, cycads, conifers, and gnetophytes D. monocots and eudicots E. All plants
In his book The Origin of Species, Darwin argued that species living today descended from a succession of ancestral species. What mechanism did Darwin propose to explain how evolution occurs?
A. competition B. natural selection C. artificial selection D. overproduction
Elaborate on why discovering endospores was important to microbiology
What will be an ideal response?
The process of carbon dioxide fixation refers to
A. reaction of carbon dioxide with water to form carbonic acid. B. release of carbon dioxide during catabolic reactions. C. reduction of carbon dioxide and incorporation into organic molecules that are assimilated. D. release of carbon dioxide during anabolic reactions.