Nitrogenous bases are located on both strands of DNA double helix. What is the significance of the nitrogenous bases? A) The order of nitrogenous bases determines the order of amino acids in the proteins synthesized.

B) The number of adenines and cytosines determines the type of RNA that will be produced.

C) The amount of thymine and guanine in the DNA molecules determine the length of genes.

D) The type of hydrogen bonding between the nitrogenous bases determines which amino acid will be added to the peptide chain

Aboy with an extra x chromosome probably has which of the following syndromes?

Nkentucky, intoxicating beverages (beer, whiskey, wine, etc.) are involved to some extent in approximately % of collisions fatal to pedestrians.

You are studying several alleles of an e. coli helicase gene. one allele, called rsr, confers resistance to rs2014, an antibiotic that works by inhibiting helicase activity. bacteria with the rss allele are sensitive to rs2014. another allele, called ts-, produces a temperature sensitive mutation of the helicase. in bacteria with the ts- allele, helicase is inactivated at 42 °c but functions normally at 37 °c. helicase functions normally at both temperatures in bacteria with the ts allele. you obtain the following data while testing four strains of e. coli at different temperatures and doses of rs2014. each number represents the percentage of maximal dna synthesis. based on this data, assign the appropriate genotype to strains a–d in the spaces provided