When a protein exists in mono-, di- and tri-phosphorylated forms. The difference of a couple of phosphate groups has no significant effect on the overall relative molecular mass of the protein, hence a single band on SDS gels, but the small charge difference introduced on each molecule can be detected by

#Question id: 10331

#Unit 9. Diversity of Life Forms

When using a cladistic approach to systematics, which of the following is considered most important for classification?

#Question id: 16098

#Unit 7. System Physiology – Animal

#Question id: 2120

#Unit 2. Cellular Organization

Which one of the following statements about membranes is true?

#Question id: 3374

#Unit 11. Evolution and Behavior

Consider an autosomal locus with two alleles A1 and A2 at frequencies of 0.6 and 0.4 respectively. Each generation, A1 mutates to A2 at a rate of μ = 1 x 10-2 while A2 mutates to A1 at a rate of υ = 1 x 10-1) Assume that the population is infinitely large and no other evolutionary force is acting. The overall change in allelic frequency will be

#Question id: 10752

#Unit 10. Ecological Principles

Which of the following is an example of Batesian mimicry?

A) a butterfly that resembles a leaf

B) a nonvenomous larva of a moth that moves like a venomous snake

C) a fawn with fur coloring that camouflages it in the forest environment

D) a snapping turtle that uses its tongue to mimic a worm, thus attracting fish