Which one of the following statements about the use of synthetic polynucleotides in cracking the genetic code is not true?
A. Poly(A) RNA directs the synthesis of only polylysine in vitro.
B. Particular codons are generated in predictable ratios with random RNA polymers containing specific ratios of different nucleotides.
C. Three different amino acids are incorporated into peptides when synthetic polymers of only one nucleotide are used to synthesize the RNA polymer.
D. The codon table was completed by using RNA polymers of defined sequences.
C
You might also like to view...
Which of the following provides the likeliest explanation for the differences seen in the human population?
A. presence of parasites in different areas B. amount of sunlight in different areas C. the altitude in different areas D. natural selection
Our closest-living relatives on the evolutionary tree are
A. bonobos and common chimpanzees. B. Homo erectus. C. orangutans and gibbons. D. gorillas. E. Homo neanderthalensis.
Which is the correct sequence of embryonic development in eudicots?
a. globular stage embryo ? suspensor embryo ? proembryo ? heart stage embryo b. heart stage embryo ? globular stage embryo ? proembryo ? torpedo stage embryo c. torpedo stage embryo ? globular stage embryo ? heart stage embryo ? suspensor d. proembryo ? torpedo stage embryo ? heart stage embryo ? globular stage embryo e. proembryo ? globular stage embryo ? heart stage embryo ? torpedo stage embry
Which biome has the greatest number of distinct layers of vegetation?
a. savanna b. tropical rain forest c. desert d. chaparral e. grassland