Which feature of Archaea is shared with Bacteria but not with Eukarya?
a. the sequestration of DNA into a nucleus
b. the common occurrence of introns
c. the chemical structure of the cell walls
d. the plasma membrane structure
e. a genome comprised of a single, circular molecule of DNA
E
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What structures of the male and female reproductive systems do not share a common embryonic origin?
A. labia majora and scrotum B. labia minora and urethra C. clitoris and penis D. cervix and ejaculatory duct E. All of these pairs share a common embryonic origin.
What term describes the process of an unfertilized egg developing into a normal offspring?
a. parthenogenesis b. sexual reproduction c. budding d. fragmentation
Other than abstinence and sterilization, the most effective method of contraception is the
A) diaphragm. B) contraceptive sponge. C) birth control pill. D) IUD. E) condom.
Adaptive radiation is best described as the
A. existence of groups of distantly related species recently evolved from a common ancestor. B. existence of groups of closely related species recently evolved from different ancestors through hybridization. C. existence of individuals of closely related species that originated in different areas within diverse habitats, but that have rejoined as a single species. D. existence of groups of closely related species recently evolved from a common ancestor.