Exam 10: The Nature of the Gene and the Genome

A gene in the human genome is highly conserved among vertebrates other than humans,but varies quite a bit (about 15%)from the same gene in chimpanzees.This gene in the human genome is called ________.

What may be the primary mechanism in the evolution of proteins that are composed of domains derived from different ancestral genes?

Why are satellite DNAs separated from the bulk of the genome during density gradient centrifugation?

Transposase is an enzyme that __________.

Why would much larger satellite DNAs be unlikely to form satellites in density gradients?

In a right-handed double helix,if one looks down the central axis of the molecule,_________.

Purines are characterized by _______;pyrimidines are characterized by ______.

How might a transposase be responsible for our ability to ward off infectious disease?

DNA sequences in bacteria that on rare occasions moved from one place in the genome to another are called ________.

The most common type of genetic variability in humans occurs at sites in the genome where single nucleotide differences are found among different members of the population.What are these sites called?

An organism has 4 chromosomes (generation 0).If there were no reduction division in meiosis,how many chromosomes would the organism have after generation 10?

What gives a DNA molecule its negative charge?

Which polyploidization mechanism is thought to occur most often in plants?

What method can be used to generate DNA fragments of a uniform size of about 1000 nucleotides?

What would happen if meiosis did not include a reduction division?

How is the extent of DNA denaturation usually measured?

Which of the following is not a conclusion reached by Mendel?

What is the name of chromosomes that have as many as 1024 times the number of DNA strands usually present?

You isolate DNA from a particular organism and analyze it.The amount of adenine was 6 µmoles and the A+T/G+C ratio is 4.0.How much guanine should be in the sample?

The genome is essentially equivalent to all of the genetic information that is present in a ______ set of chromosomes.