Human diet must be varied enough to provide ____________________ of the 20 amino acids from the foods we eat. Fill in the blank(s) with the appropriate word(s)
nine
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Choose the factors contributing to adaptive radiation of Drosophila in the Hawaiian Islands. Check all that apply.
_____ New islands are constantly being formed. _____ There are high rates of mutation due to radioactive materials in the lava flows. _____ The islands are highly volcanic. _____ Drosophila species have no predators on the Hawaiian Islands.
Mutations are likely to persist after SOS repair, but not after light-induced or excision repair
Indicate whether this statement is true or false.
What term refers to the action of touching the thumb to the tips of the other fingers?
a. Flexion b. Abduction c. Circumduction d. Prehensile e. Opposition
Which of the following does not apply to the technique known as gel electrophoresis?
(A) The DNA is pulled to the positive end of the gel box (B) The agarose gel provides for a porous matrix (C) The buffer solution helps supply ions needed to conduct an electric current (D) The larger fragments move further down the gel than the smaller ones due to their heavier weight