In 2004, archaeologists unearthed a female skeleton on the Indonesian island of Flores that led to its classification as a member of the genus Homo instead of Australopithecus because of
A) a bone structure that reflected a raised brow of the skeleton.
B) a bone structure that suggested she was able to walk upright and her type of chewing ability.
C) the presence of a furrowing suture in the occipital lobe.
D) the absence of complex tools for hunting.
E) the absence of frontal molars in the jaw.
B
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If an organism with 64 chromosomes mates with a closely related organism with 62 chromosomes, the
most likely result will be
a. many unhealthy offspring due to hybrid breakdown. b. many unhealthy offspring due to hybrid inviability. c. no offspring due to hybrid sterility. d. sterile offspring due to hybrid inviability. e. sterile offspring due to hybrid sterility.
Which organisms reproduce both sexually and asexually?
a. plants and fungi b. animals only c. plants only d. plants and animals
The number of offspring an individual organism could have under optimal conditions is called the
a. biotic potential. b. fertility rate. c. life expectancy. d. carrying capacity. e. fecundity.
Leptospirosis has all the following characteristics except
A. most common in cattle, horses, pigs, and dogs B. pathogen is a spirochete C. infects kidneys, liver, brain, eyes D. humans acquire it by contact with abraided skin or mucous membranes E. can be transmitted by animal bites