Data from the Human Genome Project revealed that humans, considered among the most complex of all organisms, have fewer genes and less DNA than some "simpler" organisms. Explain how a species can be more complex than another even though it possesses fewer genes
What will be an ideal response?
Not all the genes in the human genome have been identified, but the 20,000 genes is far fewer than the predicted number of 80,000 to 100,000 . In addition, there are many more different proteins in the human body than there are genes. This discrepancy is explained by the fact that the mRNAs from over 90% of our genes are processed in several ways so that a genome with 20,000 to 25,000 genes can produce several hundred thousand different proteins.
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Refer to the figure above. Which curve best describes survivorship in humans who live in developed nations?
A) A B) B C) C D) D E) E
Which of the following is an application of transposon tagging?
A. To test if a transposon is replicative B. As a tool to clone novel genes C. To track the movement of transposons between species D. To inactivate transposons in a genome
The ____secretes bile
a. liver b. gallbladder c. pancreas d. small intestine e. stomach
Which of the following does NOT belong with all the others?
a. angiotensins b. ADH c. aldosterone d. renin e. insulin