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

There is about 1,000 times as much DNA in a human cell as in an E. coli cell but only about 5 times as many genes. What accounts for this discrepancy?

The eukaryotic genome is much less tidy and compact than the genomes of prokaryotes. Eukaryotes, but not prokaryotes, have __________.

Alu elements __________.

Recall that the human genome contains roughly 3 billion base pairs per haploid genome and that about 25% of the human genome is associated with genes, including introns and regulatory sequence. What would be the approximate average length of DNA per human gene if the genome contained 20,000 genes?

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 __________.

How do transposable elements promote genetic diversity in a population?