The processes of natural selection are non-random and lead to the incorporation of only favorable traits in succeeding generations
Indicate whether the statement is true or false
F
Natural selection acts without purpose, and neutral traits can also be passed along.
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Which of the following is an example of the second law of thermodynamics?
a. Conversion of the energy in sunlight into glucose b. The use of gasoline to propel your car c. ATP activation of a proton pump. d. A light bulb heats up after use e. A nuclear reactor lights up the city.
If a gene in Drosophila is expressed only when an imaginal disc (
A) begins to differentiate, it is referred to as a homeotic gene. Recessive mutations in such genes often result in loss of function so that the structure does not develop. If the gene is expressed, but in a different imaginal disc (B), what is the result? A) loss of function of disc B's primary gene B) gain of function of several inappropriate genes in disc A C) gain of function in disc B at the "wrong" location D) deregulation of gene expression throughout disc A E) deregulation of gene expression throughout disc B
Microorganisms that typically live on human sur¬faces, including the interior tubes and cavities of the digestive and respiratory tracts, are called ____________.
A. normal flora B. acne C. biofilm D. commensal organisms E. parasitic organisms
People identified as "universal donors" have (A/B/AB/O) blood type.
Fill in the blank(s) with the appropriate word(s).