Exam 24: Evolutionary Genetics

Proteins that exhibit electrophoretic variation with at least two of the variants having frequencies greater than 1 percent in the population are known as

Briefly explain the procedure of gel electrophoresis and how proteins can be separated and studied using this procedure.

Each bifurcation in a phylogenetic tree represents

Polymorphisms in DNA structure have been detected by

The molecular source of variation that underlies the process of evolution is

What type of mutation created the different arrangements of banding patterns in the polytene chromosomes studied by Dobzhansky?

The process whereby subpopulations evolve reproductive isolation while they are geographically separated is called

Which type of molecular sequence would is best for constructing a phylogenetic tree?

Which structure was examined by Dobzhansky and his collaborators,enabling the detection of variability underlying a phenotype?

Which sequence was used to determine an evolutionary rate?

Evolutionary relationships among organisms are summarized in diagrams called

Two molecular sequences that come to resemble each other even though they are derived from entirely different ancestral sequences are said to be

The Neutral Theory states that: 1)For selectively neutral mutations,the rate of molecular evolution is equal to the rate at which these mutations occur in the population. 2)The rate of evolution does not depend on population size,the efficiency of selection,or peculiarities of the mating system. 3)If the neutral mutation rate is constant,then nucleotide and amino acid substitutions,which are due to mutations,should occur in clocklike fashion in all evolving lineages.