A researcher discovers a new antibody. Upon evaluating its sequence, she determines that the antibody is not the result of genomic rearrangement alone. What other processes could have produced this specific antibody? Select all correct choices
A. germ cell hypomutation
B. N-nucleotide addition
C. alternative mRNA splicing
D. somatic hypermutation
B,C,D
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. The substance that typically provides rigidity to fungal cell walls, and is found in some animals, is
____.
a. lignin b. cellulose c. starch d. collagen e. chitin
In many ways, the regulation of the genes of a particular group of viruses will be similar to the regulation of the host genes. Therefore, which of the following would you expect of the genes of a bacteriophage?
A) regulation via acetylation of histones B) positive control mechanisms rather than negative C) control of more than one gene in an operon D) reliance on transcription activators
Which evolutionary plant innovation eliminated the need for sperm to swim through water in order to fertilize an egg, resulting in plants being truly adapted for reproduction on land?
A) Independent gametophyte B) Roots C) Rhizoids D) Pollen E) Fruit
In the ovule, which two cells (with a total of three nuclei) are fertilized?
What will be an ideal response?