According to the fossil evidence, which hominin was the first to leave Africa?
A) Homo sapiens B) Homo ergaster
C) Homo erectus D) Homo neanderthalensis
Answer: B
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Under which circumstances does the zenk gene become active in zebra finches, and what is its effect?
What will be an ideal response?
Which animal is critically endangered in the United States?
A) black-footed ferret B) mourning dove C) striped skunk D) coyote
Cells may need to respond to changes that occur rapidly in their environment. Which of the following is the most rapid response that cells can use to change the activities of gene products?
A. covalent modification of proteins B. alter the transcription levels of genes C. change the rate of protein transport D. modify the chromatin structure around genes
The site of integration for sensory and motor information in humans is the
A. cerebellum. B. thalamus. C. basal nuclei. D. hippocampus. E. cerebral cortex.