Exam 21: Genomes and Their Evolution

Use the following information to answer the questions below. You have isolated a gene sequence from the mustard plant Arabidopsis and have BLAST searched the NCBI database. Your sequence hit several EST sequences that were identified as transcription factors. These sequences were found in E.coli, Chlamydomonas (a green algae), yeast, mice, and humans and only had a few base pair differences. -When you compared your sequence to the database, what were you practising?

Barbara McClintock, who achieved fame for discovering that genes could move within genomes, had her meticulous work ignored for nearly four decades, but eventually won the Nobel Prize. Why was her work so distrusted?

A consortium of 25 Canadian scientists, led by Dr. Rudnicki at the University of Ottawa, is looking at gene expression in both ________ cells. This is important in understanding regenerative medicine.

What is the benefit of metagenomics?

Which of the following can be duplicated in a genome?

Use the following figure to answer the next few questions. This figure shows a diagram of blocks of genes on human chromosome 16 and the locations of blocks of similar genes on four chromosomes of the mouse. -The movement of these blocks suggests that

A recent report has indicated several conclusions about comparisons of our genome with that of Neanderthals. This report concludes, in part, that, at some period in evolutionary history, there was an admixture of the two genomes. This is evidenced by

Use the following information to help you answer the next few questions. Multigene families include two or more nearly identical genes or genes sharing nearly identical sequences. A classical example is the set of genes for globin molecules, including genes on human chromosomes 11 and 16. -Several of the different globin genes are expressed in humans, but at different times in development. What mechanism could allow for this?

One of the characteristics of retrotransposons is that

Why might the cricket genome have 11 times as many base pairs as that of Drosophila melanogaster?

-The illustration above most probably represents

The comparison between the number of human genes and those of other animal species has led to many conclusions, including