Genetics is the study of heredity and variation
Indicate whether the statement is true or false
TRUE
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Which scenario is not an example of a prezygotic isolating mechanism?
a. An iris blooms at a different time of the year than a daffodil. b. A peacock puts on a different mating display than a sparrow. c. A snail with a shell coiling in one direction cannot mate with a snail whose shell curls in the other direction. d. A zebroid, a cross between a horse and zebra, is sterile. e. One type of roundworm would reject the sperm from another species of roundworm.
Which scenario illustrates a homeostatic mechanism?
a. city buses transporting people from their houses to their jobs b. water stored behind a dam that is released to make electricity c. a thermostat keeping a house at 72 degrees d. a series of underground passageways connected to a large building e. the daily temperature variations during one season
Figure 15.1
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The following question refers to the figure above illustrating the initial steps in the formation of recombinant DNA.
What is used to cut the DNA in panels 1 and 2?
A. Restriction enzymes B. Reverse transcriptase C. DNA polymerases D. RNA polymerases E. DNA ligases
Clinical significance of cell walls
What will be an ideal response?