The frequency of heterozygotes for cystic fibrosis shows ethnic variations
a. True
b. False
True
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How are the zygote and the dikaryotic stages of a fungal life cycle related?
A. The dikaryotic stage gives rise to the zygote through karyogamy. B. The dikaryotic stage and zygote stage are both diploid. C. The zygote stage gives rise to the dikaryotic stage through plasmogamy. D. The dikaryotic stage and zygote stage occur only in asexual life cycles. E. The zygote stage gives rise to the dikaryotic stage through meiosis.
Acids are compounds that:
a. can bind hydrogen ions. b. can release hydrogen ions. c. are pH 8 or above. d. contain hydrogen and hydroxide ions equal in number. e. raise pH.
Sodium-potassium pump:
a. reestablishes the gradient of sodium and potassium b. releases neurotransmitters c. pumps sodium into the cell and potassium out of the cell d. transmits the action potential
The ENCODE project seeks to
A. sequence the genomes of all animals. B. identify the functional elements of the human genome. C. identify the coding sequences of human DNA. D. sequence the DNA of all organisms. E. identify the proteins encoded by the human genome.