The DNA in chloroplasts and mitochondria of eukaryotic cells is derived from Bacteria
Indicate whether the statement is true or false.
Answer: TRUE
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Which of the following statements is true regarding respiration in fish? Select all correct choices
A. Gas exchange occurs at the alveoli. B. Gas exchange occurs at the lamellae. C. Oxygen enters the bloodstream via countercurrent exchange. D. Oxygen enters the bloodstream via crosscurrent exchange. E. Oxygen moves through spiracles. F. Oxygen moves through bronchioles.
Similar structures that have evolved
independently in different lineages that do not share common ancestry are called
a. analogous structures. b. homologous structures. c. vestigial structures. d. repeating structures. e. heterozygous structures
Which ancestors of modern humans migrated out of Africa to populate the rest of the world?
a. Homo habilis b. Homo erectus c. Neanderthals d. Cro-Magnon e. Homo sapiens
Height, weight, and eye color are examples of phenotypes that illustrate
A. codominance. B. continuous variation. C. pleiotropy. D. incomplete dominance. E. multiple allele systems.