The translation of an mRNA begins at the start codon. What is the sequence of this codon?
a. AUG
b. UGG
c. AGU
d. UAG
Ans: a. AUG
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A. Estradiol B. FSH C. LH D. Testosterone E. Progesterone
The greatest cause of extinction of species is
a. runoff. b. habitat loss. c. invasive species. d. evapotranspiration.
Which Ecdysozoan phylum contains animals called roundworms that are so plentiful in soil and other places that they may be the most abundant animals on Earth?
a. Nematoda b. Nemertea c. Annelida d. Arthropoda