The ________ is the internal membrane of the shelled eggs of reptiles
Fill in the blank(s) with correct word
amnion
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The number of major histocompatability (MHC) protein combinations possible in a given population is enormous. However, an individual in that diverse population has a far more limited array of MHC molecules because _____
A) the MHC proteins are made from several different gene regions that are capable of rearranging in a number of ways B) MHC proteins from one individual can only be of class I or class II C) each of the MHC genes has a large number of alleles, but each individual only inherits two for each gene D) once a B cell has matured in the bone marrow, it is limited to two MHC response categories E) once a T cell has matured in the thymus, it can only respond to two MHC categories
Which is not true of RNA?
A. It is usually single-stranded. B. It functions in the cytoplasm. C. It contains both uracil and thymine. D. It contains ribose.
Specific aneuploidies are associated with various cancers. Indicate whether the statement is true or false
Spider crabs are an osmoconforming species, which likely means:
A. they regulate their solute concentration within their environment. B. they have the same solute concentration as their environment. C. they have the same temperature as their environment. D. they regulate their temperature within their environment.