Restriction endonucleases recognize specific sequences in the DNA
Indicate whether the statement is true or false
TRUE
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Which of the following is the most likely explanation for why the human brain is capable of so much more than what would be required for evolutionary fitness?
A. The additional capabilities are by-products of what was necessary for evolutionary fitness. B. The additional capabilities were necessary for survival at one time. C. A larger brain means that additional capabilities will follow. D. None of the answer options is correct.
Standing still and at attention for long periods can result in inadequate venous return. The effects of this can be seen when even young and healthy soldiers sometimes faint when standing at attention for long periods. Which of the following is NOT occurring to promote return of blood from the venous system in this situation?
A. sympathetic activation of smooth muscle in large veins B. skeletal muscle activity compressing veins and forcing blood flow C. one way flow in the venous system due to valves D. ventricular contraction E. None of the choices for this question are correct.
Which gamete genotypes are expected to contribute to viable offspring when an individual is heterozygous for a pericentric inversion and crossing-over occurs as shown in the diagram? (The ? symbol represents a centromere.)(Select all that apply.)
A) ? A B C D E
B) ? A B C d a ?
C) ? a d c b e
D) e b c D E
E) ? A B C d e
F) A B C ? d a
G) e b c ? D E
H) A B C ? D E
J) a d ? c b e
Differentiate between macroevolution, microevolution, and speciation. What will be an ideal response?