Horses and donkeys can interbreed, but their offspring (mules) are infertile. This is an example of what kind of reproductive isolating mechanism?
A. pre-zygotic, behavioral isolation
B. pre-zygotic, temporal separation
C. pre-zygotic, ecological separation
D. post-zygotic
E. post-zygotic, ecological separation
D
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Describe two roles viruses have in the open ocean
What will be an ideal response?
Which of the following is not true of fluorescent in situ hybridization (FISH)?
A. It can be used to identify unknown bacteria without culturing. B. It can be used to detect RNA in cells. C. Probes can locate genes on chromosomes. D. It uses electrophoresis to separate the DNA. E. Probes can be applied to intact cells.
The vitreous body is located between the cornea and the lens
____________________ Indicate whether the statement is true or false.
In a typical human body (somatic) cell, how many total chromosomes are there?
A) 23 B) 46 C) 1 D) 2