The following is the order of steps when preparing a Southern Blot: Group of answer choices Extract DNA, transfer DNA fragments to membrane via blotting, hybridize membrane with probe, expose membrane to X ray film, develop Xray and observe band patterns Extract DNA, run a gel, hybridize membrane with probe, expose membrane to X ray film, develop Xray and observe band patterns Extract DNA, digest DNA with restriction enzymes, run a gel, transfer DNA fragments to membrane via blotting, hybridize membrane with probe, expose membrane to X ray film, develop Xray and observe band patterns Extract DNA, digest DNA with restriction enzymes, transfer DNA fragments to membrane via blotting, run a gel, hybridize gel with probe, expose gel to X ray film, develop Xray and observe band patterns

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

Scenario 5 1) take 10 red and 10 black beans and place them, mixed, on the table. record the starting phenotype # and frequencies (% of your total population) of your starting population in the table provided (generation 0). 2) act as a predator. “capture” as many organisms as you can until you have reduced the population to three organisms. put them aside. at this point, the predators die. 3) the remaining organisms each produce 2 clonal offspring. multiply your organisms accordingly and allow them to mix on the table. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 1). 4) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 2). 5) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 3).

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?