The dominant vegetation types in temperate shrublands are
A) pine trees.
B) evergreen shrubs and sclerophyllous vegetation.
C) dwarf willows and Atriplex.
D) grasses and dwarf oak.
B
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To which zoogeographical realm does the North American continent belong?
a. Palearctic b. Oceanian c. Neotropical d. Panamanian e. Nearctic
What is the correct path a smell sensation takes
on its way to the brain?
a. mechanoreceptors>>olfactory bulb>>olfactory tract>>cerebrum b. chemoreceptors>>olfactory bulb>>olfactory tract>>cerebrum c. mechanoreceptors>>olfactory tract>>olfactory bulb>>cerebrum d. chemoreceptors>>olfactory tract>>olfactory bulb>>cerebrum e. chemoreceptors>>olfactory bulb>>olfactory tract>>cerebellum
How is a microarray used to scan for mutations in a genome?
What will be an ideal response?
Which of the following statements about mobile genetic elements is true?
(a) Mobile genetic elements can sometimes rearrange the DNA sequences of the genome in which they are embedded by accidentally excising neighboring chromosomal regions and reinserting these sequences into different places within the genome. (b) DNA-only transposons do not code for proteins but instead rely on transposases found in cells that are infected by viruses. (c) The two major families of transposable sequences found in the human genome are DNA-only transposons that move by replicative transposition. (d) During cut-and-paste transposition, the donor DNA will no longer have the mobile genetic element embedded in its sequence when transposition is complete.