How does the location of the yolk in an egg influence its development?
What will be an ideal response?
Development of the egg in the embryo takes place more rapidly in areas of the egg that do not contain
the yolk. In organisms whose eggs contain large amounts of yolk (e.g., chickens), the egg develops
only in the small area of the egg not containing yolk.
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Sea otter populations were reduced by overhunting, allowing an overgrowth of one of their prey
animals, the ____, which consumed populations of ____ and decimated them.
a. crabs; shrimp b. abalone; algae c. sea urchin; kelp d. harbor seals; fish e. crab; kelp
Skin color and height are inherited by
A. polygenic inheritance. B. lack of dominance. C. multiple alleles. D. pleiotropy.
The subatomic particles that surround the nucleus are the
A. protons. B. protons and neutrons. C. protons and electrons. D. electrons. E. neutrons.
Streptococcus mutans is a major cause of cavities. It resides in the gum pockets, does not have catalase activity, and can be grown outside of an anaerobic chamber. The bacterium is probably which of the following?
A. a facultative anaerobe B. an obligate aerobe C. an obligate anaerobe D. an aerotolerant anaerobe