Which of the following organisms spends its life cycle in the haploid state?
A) bacteria
B) fungus
C) Drosophila
D) trees
E) humans
A) bacteria
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Which of the following represents a density-independent cause for the extinction of wooly mammoths?
a. human hunting b. reduction of habitat c. climate change d. disease
The above figure represents which of the
following chromosomal changes:a. inversion b. deletion c. duplication d. translocation e. aneuploidy
When an owl catches and kills a mouse for food, the owl is
a) a scavenger b) a predator c) prey d) a parasite
Deafness may be caused by malformation of the stapes bone. This may occur by...
A. failure of Meckel's Cartilage to degenerate properly. B. failure of paraxial mesoderm and neural crest cells to merge properly and form the stapes. C. failure of Reichert's Cartilage to degenerate properly. D. failure of the stapes to arise from the incus. E. failure of the stapes to arise from the tympanic membrane.