Why can one change in a nucleotide sequence of a gene cause a nonfunctional protein to be produced?
A. The change can cause a stop codon to occur early in translation and the full length protein is not translated.
B. A substitution can result in one incorrect amino acid being present in the protein which can affect the shape of the protein and therefore its function
C. An insertion or deletion can occur early in the gene and result in an incorrect translation of the protein.
D. All of the above
Ans: D. All of the above
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A) TC B) TH C) B7 D) CD28
Golden rice contains a transgene that allows for increased production of vitamin A
a. True b. False Indicate whether the statement is true or false
The part of an antigen binding site on an antibody that binds antigen is the
A) idioblast. B) idiotype. C) epitope. D) intron.
Which of the following reflect(s) the likely presence of (a) gene mutation(s)?
A. Fruit flies subjected to intense radiation produce a wider array if variable offspring B. A chemical leaking from the surface of an old abandoned coal mine alters a regulatory gene so that a cricket nymph develops an extra set of eyes C. The bacteria that cause gonorrhea, a common sexually disease, have previously been killed by penicillin; however, after continuous usage of the antibiotic, penicillin- resistant strains are now becoming prevalent D. Radiation causes an alternation in a DNA nucleotide sequence, which is discovered when mapped, but which appears to be neither increasing nor decreasing in successive generations E. All of the choices are correct