Propose a hypothesis for the deviation in color of E.coli colonies after exposure to UV light.

We are suppose to explain what type of mutation could cause for color variation in certain colonies of E. coli. We first started off with one normal strand of the E. coli bacteria, and after UV light exposure we need to propose a theory of what typeof mutation could cause a single colony to mutate into 5 possible colors (white, pink, orange, red, and dark red). We also need to know if this mutation could be related somehow to dna repair mechanisms and if they can somehow link to other mutations. We also noted delayed growth in some of the colonies, ie. after 2 days there was no growth but after 4 there was. Also, why do they grow in sectioned colonies instead of all together... click for more

Determine the DNA sequence motif that is bound by CBF1

I have 5 sequenced genes, including the punitive promotor region of each gene. All are involved in the cold acclimation process in arabidopsis. Each is expressed only when the temperature falls below a certain point. the specific transcripition factor CBF1 binds somewhere between -200 and -250 of the genes to initiate transcription. How do i use the sequences to determine the sequence that is bound by CBF1?

Can further evolution of antibiotic resistance can or cannot be prevented.

The evolution of antibiotic resistance in bacterial populations is a direct consequence of natural selection applied by widespread use of antibiotic drugs. When a new antibiotic is first introduced, it kills the vast majority of bacteria exposed to it. The surviving bacterial cells, however, may include individuals whose genomes happen to include a mutant gene that confers resistance. As Darwin understood, individuals carrying the resistance gene will leave behind a disproportionately large share of offspring, which inherit the gene. If the environment consistently contains an antibiotic, bacteria carrying the resistance gene will eventually come to predominate. Because bacteria reproduce so... click for more

AP Bio genetics problem

In mice, long tails (L) are dominant to short tails (l). Straight whiskers (S) are dominant to curved (s). The genes are unlinked. Two mice are bed many times. The following is a compilation of the F1 data from each mating. 40 long tail, straight whisker 16 long tail, curved whisker 45 short tails, straight whisker 12 short tail, curved whisker What are the most probably genotypes of the two parents? Show your reasoning. This is a type of question that I am having problems with in my AB bio class. Can you please help me to understand how to go about solving this?

Compare and Contrast peer review article vs. popular press article

Ideas for Paper! Peer Review Article Vs. Popular Press Article Prepare a 1050 - 1400 word paper by obtaining a recent (less than 6 months old) article from the popular press (newspaper or magazine) and then look up a peer reviewed journal article on the same or similar topic. Clearly summarize each article in your own words and contrast and compare their content as you answer the following questions: What was the attention to details? What triggered the research? Who conducted the research? What methods were used? What conclusions were reached? What does this tell you about Peer Reviewed Journal article and a Popular Press article? Be sure to include the citations for the tw... click for more