Woolly mammoths were determined to be more closely related to Asian elephants than to African elephants on the
basis of ____.
a. DNA sequencing of nuclear genes
b. fossilized morphological evidence
c. embryological evidence inferred from fossils
d. mitochondrial and nuclear DNA sequences
e. cytochrome c amino acid sequences
ANSWER: d
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The greater the amount of resources, the faster the growth and development of an organism
a. True, resources promote growth and development. b. False, in excess, some resources can be toxic. c. True, a lack of resources can lead to sickness and disease. d. False, some resources are limited.
In meiosis homologous chromosomes align next to one another during
A. interphase I. B. metaphase II. C. prophase I. D. metaphase I. E. prophase II.
What is the male sexual structure that produces sperm in plants?
a. antheridium b. archegonium c. sporangium d. strobilus e. stoma
In an experiment with amphibian embryos, cells from a blastomere that was divided in two developed normally under which condition?
A. When they contained at least half of the gray crescent B. Only when cells did not have the gray crescent C. Only when cells received the full amount of gray crescent D. When cells were cleaved bilaterally E. When cells were cleaved radially