1. Theoretically, plants could increase or decrease the size of individual stomata and still achieve the same result as varying the number of stomata. But they dont do this- plants only vary stomata number, not size. Why? 2. How many stomata would you expect desert plants to have relative to […]

Suppose that the following enzymatic pathway is used to synthesize amino acid histidine in Neurospora enzyme A enzyme B enzyme C Precursor ————> Imidazole ———> Histidinol ———–> Histidine These enzymes are encoded by three unlinked genes A, B and C respectively. A prototrophic strain with the genotyp ABC is crossed […]

Three of the many known coat colors in mink are the standard wild-type (black-brown) color, a blue-gray color known as silverblu, and a darker blue-gray color known as steelblu. Matings between wild-type mink can produce all wild-type or 3 wild-type: 1 silverblu or 3 wild: 1 steelblu. 1. Arrange the […]

You have discovered a new species of antelope that has particularly long legs that you name Dadduus longlegednis. When you examine the motor axons from a number of specimens, you notice that some of them seem to be suffering from some degree of demyelination. You determine that the resting membrane […]