If a particular immunoglobulin heavy chain has 50 V genes, 27 D genes and 6 J genes, how many different combinations can be obtained?
A) 162
B) 300
C) 1350
D) 8100
D
Environmental & Atmospheric Sciences
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Before ice can form on a lake, all the water in the lake must be cooled to
A) 0°C. B) 4°C. C) a value slightly below 0°C.
Environmental & Atmospheric Sciences
In falling, we consider the action force to be the pull of Earth on us. The reaction force is then
A. acceleration of fall. B. nonexistent. C. pull of us on Earth. D. air resistance acting against us. E. none of the above
Environmental & Atmospheric Sciences
Water in a(n) ___________ may be brackish as a result of the mixing of freshwater and saltwater with tidal
fluctuations. Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences
Mammals attained a high degree of diversity and abundance during the Mesozoic
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences