In this model, it is often difficult to determine when exactly speciation occurred due to many __________ links between species over time.
What will be an ideal response?
transitional
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All of the following are model organisms whose genomes were sequenced as part of the original
Human Genome Project except
a. Mus musculus (mouse) b. Escherichia coli (bacteria) c. Drosophila melanogaster (fruit fly) d. Caenorrharbditis elegans (nematode) e. Danio rerio (zebrafish)
Excessive consumption of calcium, and high calcium levels in the blood will likely cause ____________.
a. raising levels of aldosterone b. lowering levels of parathyroid hormone c. lowering secretion of vasopressin d. decreasing atrial natriuretic hormone
Which of the following is NOT a structure of prokaryotic cells?
a. Flagellum b. Chromosome c. Ribosome d. Capsule e. Chloroplast
All of the following pertain to HIV, except
A) It can enter into nervous tissues and cause abnormalities B) It has reverse transcriptase C) It attaches primarily to host cells with CD4 receptors D) It causes Kaposi' sarcoma E) The viral DNA integrates into the host nucleus