ability to control their level of cell's gene expression A is called
A. gene transformation.
B. gene regulation.
C. gene splicing.
D. gene addition.
E. gene correction.
B. gene regulation.
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Which one of the following statements about the human impact on Earth's ecology is correct?
A. Agriculture has increased abundance and distribution of some species, while decreasing abundance and distribution of other species. B. Humans commandeer as much as 25% of all photosynthetic production on land. C. More atmospheric nitrogen is converted to ammonia by humans than by the rest of nature. D. Human activities produce more carbon dioxide than do volcanoes. E. All of these statements about the human impact on Earth's ecology are correct.
We say that genes are linked when they
a) produce a balanced polymorphism b) contain multiple alleles c) are located near each other on a single chromosome d) are responsible for producing the same protein e) assort independently
To monitor and supply sufficient amounts of oxygen to surrounding tissues, blood vessels have oxygen and ____ -induced sensors, or receptors
a. nutrient b. growth factor c. receptor d. hypoxia
Some STDs cause infertility. How?
What will be an ideal response?