What culture had the earliest aquaculture operations?
a. Japanese
b. Greeks
c. British
d. Chinese
d
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Four children of a man and woman who are second cousins have too few teeth, which is an autosomal recessive condition called oligodontia caused by mutation in a gene called LTPB3 on chromosome 11. The affected individuals are also short, with increased bone density in the spine and skull. The protein that causes the symptoms by affecting certain bone cells is too short. The mutation in this family is most likely
A) a missense mutation. B) a nonsense mutation. C) a duplication of the gene. D) a replacement of all purines with pyrimidines.
Sexual reproduction in humans is an example of DNA recombination
Indicate whether the statement is true or false
Which of the following describes the difference between the cytoplasm and the cytosol?
A) The cytoplasm is the region inside the plasma membrane that includes the nucleus, whereas the cytosol is the fluid medium inside the cell. B) The cytoplasm is the region inside the plasma membrane but outside the nucleus, whereas the cytosol is the fluid medium inside the cell. C) The cytoplasm is the fluid medium inside the cell, whereas the cytosol is the region outside the nucleus. D) The cytoplasm is the region only outside the nucleus, and the cytosol is the region only inside the nucleus.
Which of the following shows the correct energy flow?
A) sunlight ® consumer ® producer B) sunlight ® producer ® consumer C) producer ® sunlight ® consumer D) consumer ® producer ® sunlight