Nearly all dinosaurs became extinct as a result of direct competition with mammals
A. true
B. false
B
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Integration of linear transforming DNA into the chromosome
A) is not required for the expression for the transformed genes. B) is catalyzed by the RecA gene. C) almost never occurs because restriction endonuclease will degrade the DNA before it is integrated. D) only occurs in laboratory-based systems in artificial competent cells.
About ____ couples are affected by infertility
a. 0.5% of b. 1 in 6 c. 1 in 10 d. 1 in 100 e. 25% of
There are three aspects of entire populations that are important and often studied. Select the best choice from the ones listed.
A. a population's range, the pattern of spacing of individuals within the range, and the size that the population attains B. a population's range, the amount of food available within the range, and the size that the population attains C. a population's range, the parental care received by each offspring within the population, and the size that the population attains D. a population's range, the size home range of an individual in the population, and the parental care expended for each offspring
A woman has B blood type of the ABO system. Her mother is type O. From this, we can infer that her father:
A: could be any blood type. B: has AB blood type. C: could not have O blood type. D: could not have B blood type. E: could not have AB blood type.