Why is DNA able to store large amounts of information?
a. It contains a large number of different nucleotides.
b. Its nucleotides can be arranged in a large number of possible sequences.
c. It is capable of assuming a wide variety of shapes.
d. The sugar and phosphates can be arranged in many different sequences.
e. The nucleotides can be altered to form many different letters in the sequence.
B
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Populations that occupy ____ inevitably experience low carrying capacities
a. ecotones b. endangered habitats c. small habitat patches
d. large habitat patches e. small ecological niches
DNA markers that are found to segregate with a mutation of interest can be used to determine the mutation's distance from the markers by looking at what?
What will be an ideal response?
Which one of the following best describes the evolutionary advantage of bipedalism?
A) allows an organism to have precise control over the action of the thumb and fingers B) frees the hands for carrying objects C) results in improved eye-hand coordination D) in early humans, allowed for complex motions associated with the use of tools E) increases the chance that an organism can communicate through the written word
Approximately what percentage of the immune system is located in the intestinal tract?
a) 1% b) 10% c) 100% d) 70%