). Which nucleotides make up a DNA strand? 2). Which nucleotides make up an RNA strand? 3). Explain a substitution

How was this wrong? Could someone show me to correction :)

Researchers are designing several experiments to test the ability of Salmonella bacteria to develop antibiotic resistance. A culture of Salmonella bacteria is exposed to the same concentrations (200 mg/L) of an antibiotic for four days. The table shows the number of isolated resistant bacteria over a four-day period. Which of the following statements best explains these results? A - The bacteria were not affected by the antibiotic. B - After being exposed to the antibiotic, the bacteria altered their DNA. C - A new species of bacteria emerged after the antibiotics were introduced. D - Random mutations led some bacteria to be resistant and, over time, they increased in the population.

The phosphate group furthest from the sugar in a nucleotide is the phosphate --- Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a a) alpha b) beta c) gamma d d) none of the above

Name the enzymes that cut the DNA at specific sequences and create sticky ends.

The words at the bottom with commas are the answer choices or word bank

Xeroderma pigmentosum is a genetic disease caused by an error in the nucleotide excision repair process that fixes damage to DNA by ultraviolet light.  Studies have shown that it can result from mutations in any one of seven genes. What can you infer from this finding?   A) There are seven genes that produce the same protein B) These seven genes are the most easily damaged by ultraviolet light. C) There are seven enzymes involved in the nucleotide excision repair process. D) These mutations have resulted from translocation of gene segments.

Discuss the experiments Griffith, Avery and Hershey/Chase did in the early 1920-50s that helped determine DNA was the genetic stuff.  What was the “take home” from each?

Unlike eukaryotic organisms, bacteria can recombine their genome with foreign DNA.What are the methods bacteria use to recombine their DNA?

During PCR amplification in preparation for DNA sequencing, why were there different colors at the 3’ ends of the fragments produced? (What did these four colors represent?)