The human population growth rate is higher now than ever before
Indicate whether the statement is true or false
FALSE
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In a conjugation experiment not all of the cells receiving two genes will demonstrate an altered phenotype for both genes. What is the most likely explanation of this phenomenon?
A. One gene is toxic to the cell B. Transferred genes must undergo recombination for genotypic conversion of the recipient cell and there is a possibility that only one gene will be recombined into the recipients chromosome C. The transferred DNA is rapidly degraded by the recipient cell and one gene can be degraded before it is recombined into the host chromosome D. It is not physically possible to recombine more than one gene into a single host genome per conjugation event
According to the equilibrium model of island biogeography, which island would have the greatest number of species on it?
a. small island, near mainland b. small island, further away from mainland c. large island, near mainland d. large island, further away from mainland e. large island at any distance from mainland
Population growth the most rapid when the population size is
a. near zero b. half-way between zero and K c. near K
A lacOC mutation is
A) constitutive. B) cis-dominant. C) incompletely dominant. D) codominant E) recessive.