If you had a garden full of a variety of plants, you might notice that the only pollinators of a
plant called trumpet vines are hummingbirds. Can you anticipate anything about the
appearance of these flowers? What is the advantage of having a single pollinator for your
plant species?
What will be an ideal response?
ANS:Based
on the prominent bill of the hummingbird, you might expect the flowers that they frequent to
have a very long and narrow entryway to reach the nectar. You might also anticipate that the trumpet
vine flowers would be red, since that is the color most likely to attract hummingbirds. The advantage
of a single pollinator is that when the pollen grains attach to the feathers of the hummingbird, they are
more likely to be delivered to another flower of the same species. This results in more pollen grains
successfully reaching their destination!
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Describe the steps involved in the functioning of the Na+/K+ pump, including the order and cellular localization of the
binding of the ions, as well how the transporter works.
What will be an ideal response?Vectors can transfer ____
a. DNA sequences into bacterial host cells for cloning b. DNA sequences into viral host cells for cloning c. cloned viral cells into a bacterial host for cloning d. cloned mitochondria from donor cell to host cell e. cloned chromosomes from the nucleus of a cell into its cytoplasm
If recombination frequency is equal to distance in map units, what is the approximate distance between genes A and B?
A) 3 map units B) 6 map units C) 15 map units D) 30 map units
Choose the statement that best describes the role of restriction enzymes in DNA profiling.
Restriction enzymes are used to replicate specific sequences of DNA. Restriction enzymes are used to cut DNA at specific locations. Restriction enzymes are used to join different segments of DNA. Restriction enzymes are used to sequence long stretches of DNA. Restriction enzymes are used to purify DNA.