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what is the functional significance of the decreased amount of cartilage and the increased amount of smooth muscle in the lower respiratory passageway.(larynx)
The reactions of glycolysis are catalyzed by enzymes and obviously proceed without much problem. However, when we look at some of the individual steps, they have positive standard free energies. What are these steps and how does the process preven..
What step in the RT mechanism controls the rate at which RT can proceed at incorporating the dNTPs.
In some plants, a red pigment, cyanidin, is synthesized from a colorless precursor. The addition of a hydroxyl group (-OH) to the canidin molecule causes it to become purple. In a cross between two randomly selected purple plants, the following re..
I in brief describe how a mutation might alter gene function (at the molecular level) if it fell into the following categories. As an example, a neomorphic mutation could result from expressing a gene in a novel location.
Explain how penetrance and expressivity can affect the expression of an allele and how epigenetic phenomena affect the observed pattern of inheritance.
Colchicine causes disassembly of microtubules. What result (if any) may you see on a giant algal cell in which cytoplasmic streaming is occurring.
For the mating plant A (A/a; B/b; C/C; d/d) X plant B (A/a; B/b; c/c; D/d), how many different phenotypes will be obtained in the offspring?
The F1 are test-crossed to dwarf, peach fuzz, oblong plants, and 1000 test-cross progeny are produced. Estimate the phenotypes of test-cross progeny, and what number of progeny is expected in each class?
Einstein once predicted that a sugar molecule glucose had a length of 1 nm. If glucose has a hexagonal structure, draw a picture of the 24 atoms in glucose.
Pseudomonas aeruginosa is a pathogen that affacts burn patients and people with cystic fibrosis. This organism manufactures a toxin called exotoxin A that inactivates elongation factors in eukaryotic cells.
briefly describe the phylogenetic relationship of these three organisms that you might infer.
Provide two examples where the nature of the DNA sequence itself is the basis for an increased rate of mutation. Explain why these sequences predispose to mutations.
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