The mRNA sequence 5\' CCCGGGUUUAAA 3\' represents an RNA copy of the a. DNA non-
ID: 84207 • Letter: T
Question
The mRNA sequence 5' CCCGGGUUUAAA 3' represents an RNA copy of the a. DNA non-sense strand sequence, 5' CCCGGGTTTAAA 3' b. DNA non-sense strand sequence, 3' CCCGGGTTTAAA 5' c. DNA sense strand sequence, 5' CCCGGGTTTAAA 3' d. DNA sense strand sequence, 3' CCCGGGTTTAAA 5' Which statement correctly describes pairs of homologous chromosomes. a. They are present in gametes. b. They are present in haploid cells. c. They are present in diploid cells. d. They are separated from each other and move to distinct daughter cells during the process of mitosis. Which of the following statements is correct regarding the strands of DNA produced during DNA replication? a. Both strands of a newly synthesized DNA molecule are made up of newly assembled nucleotides. b. One strand is new and the other is part of the original DNA molecule. c. Both strands contain some nucleotides from the original DNA molecule. The Lac operon's genes encode proteins needed to utilize lactose as an energy source. In the regulation of the operon what is the best regulation for the role lactose plays in the regulation of the operon? a. When present lactose enables expression of the operon's genes. b. When present lactose inhibits expression of the operon's genes. c. When present lactose alone can bind directly to the promoter. d When present lactose plays no role in the regulation of the operon. Muscle cells differ from skin cells mainly because a. they express different genes. b they possess different genes. c they utilize ribosomes in translation. d. they possess different chromosomes. A somatic mutation in a colon cell could result in a. the change of a nucleotide within a gene sequence. b. the production of colon, daughter cells, all carrying the mutation within the gene. c. a and bExplanation / Answer
19. Option C is the right answer. As mRNA is the copy of sense strand in the same direction. And this mRNA is formed using non sense strand of DNA as a template.
Thus 5'- CCCGGGTTTAAA -3' is the sense strand which is the copy of the mRNA with thiamine base instead of uracil.
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