A 40-year-old patient has been diagnosed with cancer. Sequencing of cancer cell genomes reveals a high frequency of G/C to A/T base pairs conversion. The DNA repair system that is most likely deficient in this patient is the
A) base excision repair pathway.
B) SOS repair pathway.
C) nonhomologous end-joining pathway.
D) nucleotide excision repair pathway.
E) synthesis-dependent strand annealing pathway.
Answer: A
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Which of the following tissue types is used as the body's reserve of energy?
a. Loose connective b. Blood c. Cartilage d. Dense irregular e. Adipose
The diapsids diverged into the lepidosaurs and the archosaurs. From which of these groups did the snakes arise?
a. archosaurs b. neither of these groups c. lepidosaurs d. There are species of snakes from both of these groups.
Viruses constitute the fourth domain of life in current biological classification schemes.
Answer the following statement true (T) or false (F)
Genes that are located on the same
chromosome
a. tend to be inherited together. b. will appear together in the gamete. c. are said to be linked. d. may be separated during chromosome pairing and crossing over. e. fit all of these characteristics