Give several examples of in situ and ex situ conservation. What are advantages and disadvantages of
each approach to conservation? What will be an ideal response?
Concepts to Consider: In situ conservation efforts include national parks, forests, and refuges--
disadvantages revolve around their multiple uses, including allowing hunting, livestock grazing,
development for fossil fuels, and military uses, but advantages include large size, and the possibility of
conserving biodiversity in the wild; ex situ conservation efforts include zoos, aquaria, botanical
gardens, as well as artificial insemination, host mothering, and captive breeding--drawbacks are related
to their relatively limited focus on a few species, but advantages allow countries with more financial
resources to captive breed endangered species for reintroduction.
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Milk is a type of protein, and within mammalian cells, these proteins are transported in
spherical organelles called __________.
a. vesicles b. Golgi complexes c. lysosomes d. mitochondria
Nuclear envelopes reform during _____
a. prophase b. telophase c. interphase d. anaphase e. metaphase
A genetic abnormality that may result in sterile
males with some mental impairment or breast enlargement is a. XXY. b. XYY. c. Turner syndrome. d. Down syndrome. e. none of these.
The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed three-chambered hearts (two atria, one ventricle)
Birds and mammals, however, are alike in having four-chambered hearts (two atria, two ventricles). The four-chambered hearts of birds and mammals are best described as _____. A) structural homologies B) vestiges C) homoplasies D) the result of shared ancestry