Cystic fibrosis and phenylketonuria are common autosomal dominant disorders.
Answer the following statement true (T) or false (F)
False
Cystic fibrosis and phenylketonuria are autosomal recessive disorders.
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Which of the following statements is true regarding the mark-and-recapture method?
A. It assumes that the size of the population of interest remains constant between the initial mark and subsequent recapture measurements. B. It can be represented by the equatiAon: N = C/R x M. C. It can rely on members of a species being identified by physical characteristics (i.e., fin markings on whales). D. It is used to estimate the size of a population of interest. E. All of the answer options are correct. F. None of the answer options is correct.
Each enzyme normally has specific pH and temperature optima at which they function best.
Answer the following statement true (T) or false (F)
The significance of the Hershey and Chase
experiments in which 32P and 35S were used is that a. DNA labeled with 35S and proteins labeled with 32P can be traced in the course of an experiment. b. they demonstrated that DNA labeled with 32P is transferred from the bacteriophage to the virus. c. they established that proteins labeled with 35S become deactivated and unable to be transferred. d. they demonstrated that bacteriophages transfer their DNA, not their protein coats, into their hosts. e. DNA may be the hereditary material; although, bacteriophages transfer both DNA and proteins into their hosts.
A newly evolved species may take over an ecological role or ecological niche that is already occupied, provided that
the new species has:a. the ability to alter or change the environmental parameters. b. fitness that is almost as high as the fitness of the original species. c. the ability to grow to a larger size, thus providing it with a selective advantage. d. features that make it competitively superior to the original occupant of that niche. e. the ability to evolve through natural selection, as opposed to the original occupant, who cannot continue to evolve.