Segments of eukaryotic DNA that can move from one site to another in the genome by means of an RNA intermediate are called __________.

Chromosomal rearrangements may be important in evolution because __________.

The molecular data indicate that the globin gene family __________.

Evolution can rapidly alter a protein-coding gene so it encodes a protein with a different structure and function through __________.

Why might active transposons be rare in natural populations?

What can be learned from comparing the genomes of distantly related species, such as yeast and humans or plants and fruit flies?

Detailed comparison of the human and chimpanzee genomes has revealed that __________.

A gene family has been identified that has undergone extensive duplication in humans but is present in only one or a few copies in other primates or other mammals. What experimental approaches could be used to determine the function of this gene and its significance in human evolution?