Which of the following statements about DNA is (are) true?
A) DNA contains thymine but not uracil.
B) DNA molecules contain deoxyribose.
C) In a double-stranded DNA molecule, adenine on one strand will be connected to thymine on
the complementary strand by two hydrogen bonds.
D) All of the above statements are true.
D) All of the above statements are true.
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You are surveying biodiversity on a new island chain. You have counted the number of bird species on one island already. The next island is larger and closer to the mainland than the one you have just surveyed
According to the theory of island biogeography, the total number of its bird species should be ____ than on the current island because the rate of immigration to the new island should be ____ and the rate of extinction should be ____ . Refer to Figure 46.17 in your text for help. Fill in the blank with the appropriate word.
Which point in the accompanying diagram represents the area with the highest volume of water evaporation?
What will be an ideal response?
The whole-genome shotgun approach is useful for sequencing small bacterial genomes but has failed in the case of larger eukaryotic genomes such as those of Drosophila and human.
Answer the following statement true (T) or false (F)
Lyme disease is caused by a bacterium found in the bloodstream of small woodland rodents such as mice or chipmunks and also found occasionally in deer. Yet humans get this disease without coming into direct contact with either rodents or deer. Explain
the concept of a biological vector, and discuss how humans contract Lyme disease. What will be an ideal response?