Which of the following statements about molecular evolution is true?
A) Homologous genes often evolve in the same way.
B) Different regions of the same gene evolve at different rates.
C) Genes in the same organism evolve at about the same rate.
D) Genes in different organisms evolve at about the same rate.
E) Nucleotide substitutions are nonrandom.
B
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Which two of the following bacteria that are strictly anaerobic with respiratory or fermentative metabolism are most similar in physiological function?
A. Desulfuromonaceae B. Geobacteraceae C. Enterobacteriaceae D. Bdellovibrionaceae
The offspring (F1) resulting from the cross between two red flowered plants are 3/4 red and 1/4 white. The most likely genotype of both red flowered parental plants (P1) is ____
a. codominant recessive b. incomplete dominant c. incomplete recessive d. heterozygous e. homozygous recessive
Bacteria and Archaea both have members that use sulfur compounds as a terminal electron acceptor
Indicate whether this statement is true or false.
An imperfect flower
A. has no petals or sepals. B. contains only male or only female structures. C. is sterile. D. has accessory structures with irregular symmetry.