Which of the following is a population?
1.the deer (Odocoileus hemionu) living in Yosemite Valley, California
2.the deer and the grass in Yosemite valley
3.all of the organisms living in Yosemite valley
4.all of the organisms living in the Sierra Nevada mountains of California
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Which of the following is true of a population?
a. Members of a population are all genetically identical. b. Members of a population live together and interbreed. c. A population may include both predators and prey. d. Members of a population spend much of their time living apart. e. More than one of these is true
Contraction of the muscles surrounding an arteriole that decreased its diameter by 50% would
A. increase the resistance in the arteriole by approximately 50%. B. increase the resistance in the arteriole approximately 16-fold. C. not be expected to change resistance in the arteriole. D. decrease the resistance in the arteriole approximately 16-fold. E. decrease the resistance in the arteriole approximately 50%.
What is the likely consequence of a mutation that alters the branch point within an intron?
A. failure of snRNPs to recognize the 5' end of intron B. failure of snRNAs to combine with protein and form snRNPs C. failure to form a lariat D. no exon shuffling E. no effect, since introns are not expressed
Which organelle is assembled in the nucleolus of the nucleus?
a. Mitochondrion b. Chloroplast c. Ribosome d. Chromosome