The specific combination of alleles that a person inherits for a certain trait is called the
A. genotype.
B. genome.
C. locus.
D. phenotype.
E. homologous chromosome.
Answer: A
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What is the relationship between ions and myelin that prevents ions from passing through channels?
A) Size: Ions are large in diameter and myelin is much smaller. B) Electrical: Ions have negative charges and myelin have positive charges. C) Solubility: Ions are water soluble and myelin is a lipid. D) Weight: Ions are light and myelin is much heavier.
Blood flow to the skin ________.
A) is controlled mainly by decreasing pH B) increases when environmental temperature rises C) increases when body temperature drops so that the skin does not freeze D) is not an important source of nutrients and oxygen for skin cells
Spinal nerves are grouped and named according to function
Indicate whether the statement is true or false
Tripling blood vessel radius would increase blood flow 64-fold.
Answer the following statement true (T) or false (F)