Question: Would you expect to be able to isolate amber mutations (mutationfor which an amber suppressor strain would be a permissable host) in the ori sequence of a phage? Explain pleaseAlso…What is in an Ori? I dont think I quite understand if you can have trans acting regulation in an ori […]

An athlete travels to the Colorado Rockies to train for an upcoming marathon. He runs 15 miles every other day and while breathing O2 deficient air. His blood O2 levels become lowered as a result. His kidney cells sense the reduction in O2 and secrete a hormone, erythropoietin into the […]

Carrying a mutation in one copy of the BRCA1 gene leads to increased risk of developing breast and/or ovarian cancer because as a woman ages, she risks mutating the other copy of the BRCA1 gene. Surprisingly, analysis of some cancers in BRCA1 carriers revealed one mutant copy and one normal […]

Biology: Week 2 – The molecules of life – macromolecule analogies This week you learned about the 4 types of biological macromolecules: lipids, carbohydrates, proteins and nucleic acids. In a nutshell, a macromolecule is a very large molecule consisting of many smaller structural units linked together (like how a train […]