How are pseudogenes formed?
What will be an ideal response?
probably through point mutations, deletions, and duplications—any sequence that renders the gene nonfunctional
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Eukaryotic telomeres replicate differently than the rest of the chromosome. This is a consequence of which of the following?
A) the evolution of telomerase enzyme B) DNA polymerase that cannot replicate the leading strand template to its end C) gaps left at the end of the lagging strand D) gaps left at the end of the lagging strand because of the need for a primer E) the "no ends" of a circular chromosome
Which of the following statements about the distal convoluted tubule is false?
A. The filtrate entering the tubule is hypertonic relative to the interstitial space. B. Urea is the principal solute found within the filtrate in the distal convoluted tubule. C. Other wastes from the bloodstream are actively secreted into the distal convoluted tubule. D. The distal convoluted tubule delivers filtrate to the collecting duct. E. None of these statements about the distal convoluted tubule is false.
Sixty percent of all eutherian mammals come from only two groups. Which of the following are the two groups that make up the majority of the eutherians?
a. Scandentia and Lagomorpha b. Lagomorpha and Primata c. Rodentia and Chiroptera d. Cetartiodactyla and Carnivora
The rate of alcohol absorption depends on
A. the amount of food in the stomach. B. drugs taken with the alcohol. C. the amount of strenuous physical exercise. D. All of the choices are correct.