The techniques used to study molecular evolution are based on the comparison of nucleotide and amino acid sequences among species.
a. true
b. false
Answer: a. true
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Which of the following is a transversion?
A) A to T B) G to A C) C to T D) T to C
During protein synthesis, genes in DNA are copied, making ________ RNA.
Fill in the blank(s) with the appropriate word(s).
The cells at the end of meiosis I are not ready to function as gametes. Why not?
A) The chromosomes have divided, but there has been no cytokinesis. B) The homologous chromosomes have not yet separated. C) They have the right number of chromosomes but too much cytoplasm. D) They are haploid, but the chromosomes are still in duplicated form. E) They have the right number of chromosomes but no cytoplasm.
Organisms that grow at 0°C and have a maximum growth temperature of 35°C are called ________.
A. frigiphiles B. mesophiles C. psychrophiles D. psychrotrophs