Which of the following is NOT true of the
genetic code?
a. It is the same for almost all organisms.
b. There are 64 codons.
c. It has within it 5 stop codons.
d. Most amino acids have more than one
codon that codes for it.
e. Each codon is made up of three nucleotides
C
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What would happen if a woman took supplemental estrogen and progesterone beyond the 21 day of
her menstrual cycle? What will be an ideal response?
Which of the following is an example of in vivo gene therapy?
A) Using retroviruses to deliver therapeutic genes directly into a patient B) Pharmacogenomics C) Using retroviruses to deliver therapeutic genes into cultured cells D) Injecting stem cells into a patient E) None of these choices
Plants have evolved all of the following methods to help them conserve water except
A. a waxy cuticle. B. stomata. C. mycorrhizae. D. spores.
Scientists believe that the heart of the common (chordate) ancestor of all vertebrates
A. consisted of a single ventricle. B. had four chambers. C. had two chambers. D. had three chambers. E. was little more than a heavily-muscled region of the ventral artery.