Give the sex of the following people assuming that the autosomes are present in the normal number. XO; XY; XXY. Answers are in order (respectively)
A) male; male; female
B) male; female; female
C) female; male; female
D) female; male; male
E) male; male; male
Answer: C
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List three properties that all forms of cancers share and summarize the origin of these properties
What will be an ideal response?
The oxygen in Earths atmosphere:
a. was manufactured inside stars. b. was added to the atmosphere by plant life. c. has grown more abundant since the origin of Earth. d. all of these e. none of these
Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America
If reinforcement is occurring, what would you expect if you compare the calls of the two species in zones of sympatry versus zones of allopatry? A) Calls would be about the same in both areas. B) Calls would be more similar in areas of sympatry. C) Calls would be more different in areas of sympatry.
What is the relationship between the degree of crossing over and the distance between two genes?
A) It is direct: as the distance decreases, the frequency of recombination increases. B) It is direct: as the distance increases, the frequency of recombination increases. C) It is indirect: as the distance increases, the frequency of recombination doubles. D) There is no correlation. E) It is indirect: as the distance decreases, the frequency of recombination doubles.