Which of the following inspired Avery and his colleagues to perform the experiments demonstrating that the transforming factor in bacteria is DNA? (a) that A is equal to T and that G is equal to C (b) Watson and Crick’s model of DNA structure (c) Meselson and Stahl’s studies on DNA replication in E. coli (d) Griffith’s experiments on smooth and rough strains of pneumococci (e) Hershey and Chase’s experiments on the reproduction of bacteriophages

Which of the following would be present in a genome but not the transcriptome? (Select all) A) Introns B) Exons C) PolyA tail D) Promoter

Several experiments aided the discovery of DNA being the inheritable material. Which of the following experiments clearly demonstrated DNA, not protein, was the inheritable material?

Match each enzyme name in the left column with the correct descriptive phrase in the right column. (a) Topoisomerase II(b) DNA ligase(c) DNA polymerase γ(d) Reverse transcriptase(e) DNA polymerase I(f) DNA polymerase III i. Catalyzes most nucleotide incorporations in bacterial DNA replicationii. Cleaves RNA in a DNA–RNA hybrid moleculeiii. Uses a tRNA primer in synthesis of retroviral DNAiv. Acts through an adenylylated DNA intermediatev. Catalyzes formation of a double-strand DNA breakvi. Catalyzes mitochondrial DNA replication

What observations are consistent with the conclusion that DNA serves as the genetic material in eukaryotes? Select the four correct statements. a. DNA content and ploidy in various cell types( sperm and somatic cells) are related b. DNA is found to be the only macromolecule in eukaryotes that has different subunits. c. Gene transfer is a direct evidence as it has been facilitated by recombinant DNA techniques. d. The correlation of the action and absorption spectra of ultraviolet light support the interpretation that DNA is a genetic material. e. DNA is shown to be present in ribosomes, matrix, and nucleus, where genetic function is performed. f. DNA is shown to be present in mitochondria, chloroplasts, and nucleus, where genetic function is performed.

At the DNA level, a mutation in a protein coding region where a single base is replaced by another one. a) substitution O b) missense O c) nonsense O d) frameshift O e) B or C