Summarize the usefulness of the online catalog of human genetic traits developed and maintained by researchers at
Johns Hopkins University. What will be an ideal response?
ANSWER: The online catalog makes available information about any of more than 10,000 inherited
traits. Each trait can be accessed by using its unique number. Additional links can access
information about genes, chromosome locations, DNA sequences, and protein sequences.
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Agents that cannot survive outside of the host for long periods of time must be transmitted by _____ transmission
Fill in the blank(s) with the appropriate word(s).
A solution that has a higher concentration of dissolved materials than the solution it is compared to is
A. hypertonic. B. hypotonic. C. hydrophobic. D. hydrophilic.
Which of the following is a likely explanation of why natural selection favored the evolution of signals for sexual reproduction?
A) Even in the simplest organisms, sexual reproduction required several coordinated responses by cells. B) Multicellular eukaryotes required signals that were responded to by multiple organ systems. C) Cells of several kinds of mating types needed to sort themselves to allow self-recognition. D) Rooted plants required chemical diffusible signals that could travel throughout the organism. E) Hormones required a mechanism for introducing changes in their target tissues.
Which hormone causes calcium to be released from bone into the bloodstream?
A) Boniva B) estrogen C) parathyroid hormone (PTH) D) calcitonin