Paleoanthropological evidence indicates that Australopithecus afarensis probably:a

talked, but did not write.
b. talked and used pictorial symbolism.
c. did not talk, but constructed simple tools.
d. did not talk, construct tools, or use fire.
e. did not talk or construct tools, but used fire.


D

Biology & Microbiology

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A length of DNA is shown below with the vertical lines labeled 1-3, representing restriction sites. Only restriction site 2 is polymorphic. What are possible band sizes on a Southern blot if the probe hybridizes to region X?

A. 2 kb B. 2 kb, 5 kb C. 2 kb, 3 kb D. 2 kb, 3 kb, 5 kb

Biology & Microbiology

In a tetraploid species, a euploid individual would have ___sets of chromosomes.

A. 2 B. 4 C. 6 D. 8 E. 2n+2

Biology & Microbiology

Cacti in the deserts of southwestern North America and some euphorbs of the deserts of Africa, have barrel-shaped stems, short-lived leaves, and spines, yet these two types of plants are from different evolutionary lineages. This is an example of

A. selective breeding. B. transitional forms. C. homologous traits. D. convergent evolution.

Biology & Microbiology

The scientific approach that classifies organisms based on evolutionary relationships is known as ____

a. comparative morphology b. evolutionary ecology c. taxonomy d. cladistics e. genetics

Biology & Microbiology