Both sugar gliders and flying squirrels have evolved characteristics that allow them to glide, despite being geographically separated. Similar traits that have independent origins arise as a result of what phenomenon?
What will be an ideal response?
convergent evolution
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Although the spores of actinomycetes are not as heat resistant as endospores, the extent of heat resistance they demonstrate can be used to help classify these organisms.
Answer the following statement true (T) or false (F)
Changes that have occurred in living organisms over the past four billion years are due primarily to
A. extinction of species. B. continental drift. C. changes in geological periods. D. interaction of genetic changes and environmental changes. E. the change in the orbit of the moon, causing mass extinction due to volcanic activity.
Which of the following hormones is involved most directly in carbohydrate absorption?
1.gastrin
2.secretin
3.cholecystokinin
4.glucose insulinotropic peptide
Bio" refers to a gene that governs a cell's ability to synthesize biotin from inorganic precursors. What does the designation "bio+" indicate?
a. that the bacterium is biologically inactive b. that the allele is the mutant allele c. that the bacterium is biologically active d. that the allele is normal (i.e., wild type)