A stem cell retains the ability to divide and re-create itself while also having the ability to generate progeny capable of specializing into a more differentiated cell type.

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#Id: 5371

#Unit 10. Ecological Principles

Pitfall traps set into the ground catch wandering species such as beetles and spiders. These have rain covers to prevent the animals from drowning

 

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#Id: 5179

#Unit 7. System Physiology – Animal

Serum has essentially the same composition as plasma, except that its fibrinogen and clotting factors II, V, & VIII have been removed.

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#Id: 1499

#Unit 4. Cell Communication and Cell Signaling

P53 turned on sets of large intergenic noncoding RNAs to mediate transcription repression; and miRNAs.

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#Id: 7026

#Unit 11. Evolution and Behavior

Evolution means descent with modification, or change in the form, physiology, and behavior of organisms over many generations of time. 

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#Id: 2058

#Unit 8. Inheritance Biology

Quantitative character- large number of possible phenotypes that are not easily distinguished