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. 

TLS Online TPP Program

#Id: 2891

#Unit 3. Fundamental Processes

the origin has been opened (and the DNA is single-stranded) by its ability to further unwind the DNA.

TLS Online TPP Program

#Id: 2950

#Unit 3. Fundamental Processes

An ARS element consists of an A-T-rich region that contains discrete sites in which mutations affect origin function.

TLS Online TPP Program

#Id: 1003

#Unit 5. Developmental Biology

Homothorax gene encode transcription factors that are critical for antenna formation.

TLS Online TPP Program

#Id: 5944

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 5973

#Unit 10. Ecological Principles