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In an experiment, you purify a cysteine-charged tRNA and chemically alter the amino acid attached to it converting it to alanine. You place this charged tRNA in a cell-free protein-synthesizing system with all of the other charged tRNAs, mRNA and other substances needed for the synthesis of proteins. What, if anything, will be different from the normal protein coded for by the mRNA in the mixture?
what is the name for the spores at the end of hyphae.
The genotype of F1 individuals in a tetrahybrid cross is AaBbCcDd. Assume independent assortment of these four genes, what are the probabilities that F2 offspring will have the following genotypes.
A true breeding tall pea plant with axially positioned purple flowers was crossed to a true breeding dwarf pea plant with terminally positioned white flowers.
Contained is a description of the signaling cascade that results from EGF stimulation of the Ras-MAPK pathway in cells.
How could future researchers determine if the distribution of bryophyte and lichen species on a tree were set primarily by abiotic limitations, or by interactions with other species?
Three pairs of genes with two alleles each (A1 and A2 , B1 and B2 , and C1 and C2 ) control the height of a plant. Suppose that the 1 allele is dominant in each case and the 2 allele is recessive.
Drag the labels onto the graph to indicate which presynaptic neuron produced each change in the axon hillock's membrane potential. Assume that the same number of ligand-gated ion channels opens at each synapse.
Glycogen stored in muscles can be mobilized to supply metabolic energy by hydrolyzing individual glucose subunits from the polymer.
A corporation has invented a new low-calorie sugar substitute. They wish to determine if the substitute might be carcinogenic, so they use it in the Ames test with Salmonella his mutants.
A female has alleles C and H on one homolog, and c and h on the other. What kinds of eggs can she make if the genes are so close together that there is no crossing over between them.
Suppose when a virus goes out of lysogeny to finish the lytic pathway, it loops up. DRAW this looping just prior to recombining out of the chromosome.
Discuss how does Newton's force of gravitational attraction between two water molecules compare to van der waals attractive force?
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