- The taxonomic categories of the Linnaean system reflect the degree to which organisms are related - kingdom: animal - phylum: chordata - class: mammalia - order: primate - family: hominidae - genus: homo - species: sapien

- Darwin proposed that humans and other living primates share a common ancestry. - Shared anatomical characteristics provide evidence for a common evolutionary history.

phylogenetic tree of primates

- The diagram reflects the common ancestry shared by living primates, including humans. - When Darwin returned from his voyage, he wrote The Descent of Man in which he proposed that his radical theory of natural selection applied to humans. Darwin believed that humans shared a common ancestry with monkeys and apes.

anatomical characteristics

- Shared anatomical characteristics enable scientists to discern the degree to which organisms are related. - Primates have inherited a set of particular adaptations from a common ancestor. One such adaptation in the opposable thumb. The illustration on the left contrasts the opposable thumb of primates with other species that don’t have the characteristic.Other characteristics that primates share include: • nails instead of claws • eyes facing forward • extended period of care for their young

Apes and humans are members of the same order but different families. They are not in the same family because of differences in

- the position of the pelvis and curvature of the spine.

Which of the following statements regarding the Linnean system of classification is incorrect?

- Two organisms can be in the same genus but different families.

1.6.1 Human Evolution: What Is a Primate? Flashcards by Irina Soloshenko

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1.6.1 Human Evolution: What Is a Primate? Flashcards

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