How is an integrated retroviral provirus structured like a transposon?
What will be an ideal response?
Ans: Like a transposon, the provirus has terminal inverted repeats and is flanked by short direct repeats of the target DNA.
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Which of the following comparisons between the moss life cycle and fern life cycle is NOT valid?
A. Both kinds of plants have flagellated sperm that need water to reach the female gamete. B. The sporophyte generation is much larger than the gametophyte generation in ferns but is smaller than the gametophyte generation in mosses. C. The spores are produced in capsules on stalks in mosses but in small structure called sori on the underside of leaves in ferns. D. Both kinds of plants depend on wind for dispersal of spores. E. The gametes are produced in gametangia in mosses but on the underside of leaves in ferns.
The size of the predator and prey populations are influenced by each other
a. true b. false
Which bone contains the foramen magnum?
a. maxillary b. parietal c. occipital d. vomer e. sphenoid
Which hemoglobin genotype has the highest fitness in an area of low malaria infection?
a. HbAA b. HbAS c. HbSS d. All are equal