Question: A curious genetics student has decided to simulate Mendel’s pea plant experiment with another plant. Conveniently, there was a strain available for short and tall plants. The short plants had an average height of 2 inches. The tall plants had an average of 14 inches. The F1 generation had an […]

1. A survey is made of 4 allozyme loci in a particular population. The alleles are labeled alphabetically according to the mobility of their products in electrophoresis (from fast to slow). A sample of 250 individuals gave the following results: Locus Genotype A/A A/B B/B A/C B/C C/C A/D B/D […]

In an aqueous solution, virtually all D-Glucose molecules (>99%) are in pyranose form. Other aldoses have a greater proportion of molecules in the open chain form. D-Glucose may have evolved to be the predominant metabolic fuel because it is less likely than its isomers to react with and damage cellular […]

What effect would the following mutations have on the expression of the enzyme coding sequences of the tryptophan operon.  Select the letter on the right that describes the effect.  In all cases, the level of tryptophan is less than needed to bind the trp repressor.  (If the first corresponds to B, and the […]