Which statement best contrasts the angus and holstein breeds of cattle? a. angus originate in britain and europe, whereas holsteins originate in america. b. angus are used primarily for meat, whereas holsteins are used for dairy. c. angus are notable for their sweet meat, whereas holsteins’ meat is more tender. d. angus are known for their brown and white coloring, whereas holsteins are varied in color.
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Biology, 22.06.2019 11:30
Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.
Answers: 1
Which statement best contrasts the angus and holstein breeds of cattle? a. angus originate in brita...
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