Which of the following, if true, would force us to reevaluate the findings that Cann discovered with regard to the human family tree?
A. if human fossils were discovered in
Australia that had DNA similar to the DNA
found in early Homo sapiens in Africa
B. if Neanderthal genomic DNA was found in
our genome
C. if humans fossils were discovered that had
genomic DNA different than their
mitochondrial DNA
D. if human fossils were discovered in Asia
that had DNA completely different from the
DNA found in early Homo sapiens in Africa
E. None of the answer options is correct.
D
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Homologous chromosomes may differ from each other in terms of:
a. size. b. shape. c. position of the centromere. d. alleles. e. number of genes.
When the body experiences stress, the sympathetic division of the autonomic nervous system
stimulates the adrenal medulla to release
a. epinephrine. b. norepinephrine. c. knockout hormones. d. epinephrine and norepinephrine. e. epinephrine, norepinephrine, and knockout hormones.
Which of the following statements is FALSE?
A) Salts readily dissolve in water. B) Water molecules are formed by hydrolysis. C) Water freezes from the top down. D) Water is formed as a part of a dehydration synthesis reaction. E) Water is a polar molecule.
Plant cells
A) have mitochondria but do not have chloroplasts. B) lack mitochondria but have chloroplasts. C) lack mitochondria and chloroplasts. D) have chloroplasts and vestigial mitochondria. E) have mitochondria and chloroplasts.