A homologous chromosome pair is best described as two chromosomes having ____
a. the same genes in the same order but possibly having different alleles of those genes
b. the same alleles of the same genes in the same order
c. the same alleles of the same genes in a different order
d. different alleles of the same genes arranged in a different order
e. identical DNA sequences
ANSWER: a
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a. polar b. ionic c. covalent d. double e. nonpolar
One or more neural effect(s) of MDMA include(s)
a. temporary psychosis. b. panic attacks. c. depletion of natural serotonin reserves. d. memory loss. e. all of these.
Body weight is related to
a. caloric intake. b. energy utilization. c. genes. d. age and sex. e. all of these.
Birds are able to sustain long flights at high altitudes because they
A) can extract oxygen during both inhalation and exhalation. B) decrease their heart rate during flight. C) use anaerobic metabolism during flight. D) have thicker blood than other animals, with many more red blood cells. E) are able to lower their body temperature during flight.