15. Genomes and Genomics

You have identified a gene encoding the protein involved in the rate-limiting step in vitamin E biosynthesis. How would you create a transgenic plant producing large quantities of vitamin E in its seeds?

Describe the human genome in terms of genome size, the percentage of the genome that codes for proteins, how much is composed of repetitive sequences, and how many genes it contains. Describe two other features of the human genome.

You have identified a recessive mutation that alters bristle patterning in Drosophila and have used recombinant DNA technology to identify a genomic clone that you believe harbors the gene. How would you demonstrate that your gene is on the genomic clone?

The Human Genome Project has demonstrated that in humans of all races and nationalities approximately 99.9 percent of the genome sequence is the same, yet different individuals can be identified by DNA fingerprinting techniques. What is one primary variation in the human genome that can be used to distinguish different individuals? Briefly explain your answer.

Imagine yourself in the same position as Kristen Powers, faced with the decision of whether or not to undergo a genetic test that will discover if you have inherited Huntington disease. List five life decisions or choices that you think are likely to be affected by the results of the genetic test. Do you think you would make the same choice to test that Kristen made? Why or why not?

Through the Human Genome Project (HGP), a relatively accurate human genome sequence was published from combined samples from multiple individuals. It serves as a reference for a haploid genome. How do results from personal genome projects (PGP) differ from those of the HGP?

When the S. cerevisiae genome was sequenced and surveyed for possible genes, only about 40% of those genes had been previously identified in forward genetic screens. This left about 60% of predicted genes with no known function, leading some to dub the genes fun (function unknown) genes. You wish to know the physical location of the encoded protein product. How will you obtain such information?

Select one of the hereditary conditions from either the RUSP core conditions list or the RUSP list of secondary conditions and do some online research to find the following information: The frequency of the condition in newborn infants (note any populations in which the condition is more frequent)

Select one of the hereditary conditions from either the RUSP core conditions list or the RUSP list of secondary conditions and do some online research to find the following information:

The anticipated outcome if treatment is applied

Select one of the hereditary conditions from either the RUSP core conditions list or the RUSP list of secondary conditions and do some online research to find the following information:

The duration of treatment

Select one of the hereditary conditions from either the RUSP core conditions list or the RUSP list of secondary conditions and do some online research to find the following information:

The recommended treatment for those with the condition.

Select one of the hereditary conditions from either the RUSP core conditions list or the RUSP list of secondary conditions and do some online research to find the following information:

The symptoms and consequences of the condition if it is not treated.

Select one of the hereditary conditions from either the RUSP core conditions list or the RUSP list of secondary conditions and do some online research to find the following information:

The defect that characterizes the condition.

How has the use of model organisms advanced our knowledge of the genes that control human diseases?

Consider ethical issues associated with creating a synthetic human genome. Are there specific applications for a synthetic human genome that you support? Is creating a synthetic genome enhanced with genes for certain kinds of traits one of those applications?