Part 6: Vasoconstriction and vasodilation are opposite reactions and refer to the diameter of the blood vessels. In vasoconstriction, the diameter gets smaller so that less blood can flow through the vessels. Vasodilation is the opposite. Observe the diagram provided.

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.