A ________ is an animal that can transfer infectious pathogens from one host to another.
Fill in the blank(s) with the appropriate word(s).
Ans: vector
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With few exceptions, we can't use observable traits to measure genetic variation in populations because:
A. observable traits don't vary enough among individuals to measure. B. we can't identify enough observable traits to be useful, even if they could be measured. C. many traits are encoded by large numbers of genes. D. observable traits are products of the environment as well as the genome. E. Many traits are encoded by large numbers of genes, and observable traits are products of the environment as well as the genome.
Without changing the sequence or the orientation of the sequence(s), which is/are complementary to the sequence 5' AGGCUAAC 3'?
A. 5' TCCGATTG 3' B. 3' TCCGATTC 5' C. 5' CTTAGCCT 3' D. 3' TAAGCTTA 5' E. 3' TCCGATTC 5' AND 5' CTTAGCCT 3'
Navigation requires both compass sense and map sense
____________________ Indicate whether the statement is true or false.
Although the membrane of a "resting" neuron is highly permeable to potassium ions, its membrane potential does not exactly match the equilibrium potential for potassium because the neuronal membrane is also _____
A) slightly permeable to sodium ions B) fully permeable to calcium ions C) impermeable to sodium ions D) highly permeable to chloride ions