Question: A class of environmental science students decided to determine the composition of trees in a forest next to their campus. The students decided to conduct a point-quarter survey. When they reached the study area they found that the east side of the woods was thick with blackberry bushes. The bushes had […]

A genetic mutation occurs that alters the specificity of theGolgi enzyme that phosphorylates mannose residues in theoligosaccharides of glycoproteins. The effect of the mutation issuch that the enzyme now indiscriminately and randomlyphosphorylates mannose residues on all glycoproteins passingthrough the Golgi complex.A. What is the normal roleof this enzyme?B. What is […]

In mice, agouti fur is a dominant trait resulting in individual hairs having a light band of pigment on an otherwise dark hair shaft. A mouse with agouti fur is shown here, along with a mouse with solid color fur, which is the recessive phenotype (A = agouti; a = […]

One of a farmer’s more exotic Indian corn cobs has three different kernel colors (Tricolor Corn?). These cobs were easy to obtain. The farmer crosses parent 2 (Yellow Shrunken) with parent 4; both are true breeding. The seed from this cross are then used to grow a second generation of […]