You are working in the lab with two known carcinogens found in cigarette smoke: Benzo(a)pyren (BaP) and nitrosamine ketone (NNK). BaP is an aromatic hydrocarbon and the mechanism of carcinogenesis is through oxidation reactions with DNA. NNK is a nitrosoamine. Describe how these two kinds of carcinogens lead to mutations. (Be detailed. Remember you are graded on effort/completeness.)

Mutations within the genes for ARSs, are known to be cause certain human maladies, such as the neurodegenerative disorder Charcot-Marie-Tooth (CMT) disease along with other central nervous system dysfunctions, and cancer. Interestingly, not all those who possess mutations within specific ARS genes do not display the disease phenotype. Provide at least one reason why a person might survive. Remember, do not just name a concept. Describe the concept and then explain WHY (on a molecular level) this explanation holds true.

Please help me with this question

You generate mutants in the metabolic pathway for starlase. You conduct some complementation tests (after testing for dominance of course) and come up with the following results: 1 2 3 4 5 6 1 I 2 + 3 + 4 + + LO 5 a. How many complementation groups are there? [Select] 6 + + + + +

32. A 23-year-old man comes to the physician because of a 1-month history of weakness and muscle pain after vigorous exercise. His mother, sister, and grandmother have a similar condition; however, his father's sister and her children are unaffected. A muscle biopsy specimen shows ragged red fibers. This condition most likely results from a mutation in a gene located in which of the following labeled structures in the photomicrograph? 00 O O A) B) E) B A E D C AR

please help me with this problem

Original DNA Sequence: TACAC CTTGG CGACGACT... MRNA Sequence: Amino Acid Sequence: Mutated DNA Sequence #5 TACACCTT G G GACGACT... (Highlight the change) What's the mRNA sequence? What will be the amino acid sequence? Will there likely be effects? What type of mutation is this? 1. Which type of mutation is responsible for new variations of a trait? 2. Which type of mutation does not result in an abnormal amino acid sequence? 3. Which type of mutation stops the translation of an mRNA molecule? NO

(a) How does the duplication of individual genes occur? (b) individual that inherit a genetic condition known as xeroderma pigmentosum exhibit an extreme sensitivity to sunlight exposure and often develop skin cancer by the age of 10. What repair pathway is most likely disrupted as a result of such mutation? Explain why?

Identify the following sources of induced mutations, all of which increase the rate of mutation in human body cells. Choose between physical mutagens and chemical mutagens for each). Radiation exposures from airport security and during high altitude air travel.  Answer Ingredients such as toluene and dibutyl phthalate in nail polish. Answer Exposure to BPA by heating up food wrapped in plastic wraps in microwaves. Answer Obtaining a base tan at a tanning salon prior to a beach vacation. Answer

In this problem, just put the order of the intermediates on the pathway, starting with P and ending with Z and explain your reasoning. (So to get you started, notice the class 1 mutants—and there is only mutant in this class, which is mutant #5—won’t grow on minimal medium, but will grow if you give it substance Z. However, giving it substances, p, w, x, or y won’t help. This means that the gene that is mutated lies on the pathway in a place that the Z substances is to its right and all the other substances are to its left. The easiest next one to look at is the line with 2 pluses, and then the line with 3 pluses, and then the line with 4 pluses).