The collection of sperm from a male and the use of that sperm to impregnate a female of the same
species is called:a.
host mothering.
b. artificial insemination.
c. in situ conservation.
d. in vitro fertilization.
e. ex situ conservation.
B
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What can be said about Drosophila development?
A. Paternal genes determine the initial course of development after fertilization. B. Zygotic genes determine the initial course of development after fertilization. C. Maternal genes determine the initial course of development after fertilization. D. Syncytial blastoderm genes determine the initial course of development after fertilization.
What type of factors can trigger migration behavior in organisms?
a. seasonal weather changes b. food availability c. hormonal signals associated with maturation or reproduction d. all of these
Once a groundwater supply is contaminated with marine water, how long will it remain contaminated?
A- It depends on the concentration of the salt B- It depends on the amount of the precipitation in the area C- Forever D- Such water is not considered contaminated E- It depends on the location
As the difference in the electronegativity between atoms forming a chemical bond increases, the:
A) more symmetrical the molecule. B) more stable the molecule. C) less polar the molecule. D) more polar the molecule.