Would the evidence suggest that mitochondria or chloroplasts were the first to evolve through endosymbiosis? What will be an ideal response?
ANSWER: Evidence would favor mitochondria. While almost all eukaryotes have mitochondria, only
plants and some protists have chloroplasts. The prevalence of mitochondria in all major
eukaryotic lineages suggest that they evolved first.
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There are two types of pepper moths. The black morph is camouflaged against the dark bark of a bare tree. The light morph is difficult to detect on trees that are covered with lichen
Environmental conditions that support substantial lichen growth would result in selection for: A. the dark colored morph of the pepper moth B. the light colored morph of the pepper moth C. Moths do not eat lichen, so its growth would have no effect on selection for one color over the other. D. Color would not be selected for or against, but those moths that excrete chemicals to destroy the lichens would be selected for.
On reaching the oocyte, a human sperm cell must pass through what layer(s) before it can fuse with the plasma membrane of the egg?
What will be an ideal response?
A decomposer
a. is exemplified by a fungus. b. is the same as a parasite. c. feeds on living organic material. d. feeds on primary consumers only.
After completion of a genome sequencing project, the DNA sequences are analyzed to locate and identify genes in a
process called _____. a. automation b. comparative genomics c. physical mapping d. compilation e. annotation