It prevent
an action potential if it blocks the movement of sodium across the membrane. The
primary feature of a neuron that prevents the action potential from traveling
back from where it just passed is the absolute refractory period. It holds an
action potential if it blocks the movement of sodium across the membrane.
Your lymph nodes or "thymus" promotes the maturation of t cells.
The correct answer is the Phenotype.
The phenotypic ratio of 9:3:3:1 is the ratio associated with a dihybrid cross. It is a classical Mendelian example of independent assortment. It is a result of crossing two organisms that are heterozygous for two traits.
I do believe the answer is heart because it goes from the blood vessel to the heart.
3 nitrogenous bases code a single amino acid.
