When several codons encode the same amino acid and utilize multiple tRNAs, not all of the codons are used with equal frequency. In a phenomenon called codon bias.

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#Id: 7998

#Unit 10. Ecological Principles

The fundamental niche of a species is the range of abiotic conditions under which species can persist. 

This includes the range of temperature, humidity, and salinity conditions that allow a population to survive, grow, and reproduce.

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#Id: 10343

#Unit 4. Cell Communication and Cell Signaling

The heavy chain is then expressed on the cell surface in combination with the surrogate light chain, which is made up of VpreB and λ5. 

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#Id: 7438

#Unit 5. Developmental Biology

Slug migrates to the top layer of the soil, where it proceeds to build the fruiting structure.

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#Id: 6976

#Unit 8. Inheritance Biology

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#Id: 1187

#Unit 7. System Physiology – Animal

Types of retinal ganglion cells:

  large ganglion cells (magno, or M cells)

  small ganglion cells (parvo, or P cells)