Which of the following is NOT a theory of epigenetics explaining how cells can change gene function without changing the DNA base sequence?
A) Modification of DNA
B) Mutations causing new beneficial alleles
C) Modification of chromosomal proteins
D) Altering transcription and translation with noncoding RNA
B
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In the figure above, which of the lines represents the highest per-capita rate increase (r)?
A) line A B) line B C) line C D) line D
Would babies need to be immunized against lockjaw (tetanus) if their mother had been immunized against the disease? Why or why not?
A. No-because the mother's IgG antibodies would be passed along through the placenta before birth, protecting the baby from the infection. B. Yes-because even though maternal IgG antibodies might be passed along through the placenta, they will not last forever. The baby will need to create its own antibody response to be protected against future tetanus. C. No-because maternal IgG antibodies would be passed along in the breast milk, protecting the baby from infection. D.
A structure similar to bulbs but lacking the layers is
called a. stolons. b. rhizomes. c. bulbs. d. corms. e. tubers.
David's family is upgrading their water system from their well into their house. They decide to add a UV light system. Which type of UV radiation is probably emitted by the system?
A) UVC B) UVA C) UVB D) UVD