There are three type of Splicing signals 

Major U2-type or GU-AG introns

Minor U12-type or AU-AC introns

Minor U12-type with GU-AG introns (hybrid type)

TLS Online TPP Program

#Id: 2944

#Unit 3. Fundamental Processes

Most chromosomal replicons do not have a termination region like that of bacteria at which the replication forks cease movement and (presumably) dissociate from the DNA. 

TLS Online TPP Program

#Id: 5037

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 7413

#Unit 5. Developmental Biology

Wingless protein also acts in an autocrine fashion, maintaining its own expression

TLS Online TPP Program

#Id: 628

#Unit 2. Cellular Organization

Transcription is initiated at the beginning of the 162 nucleotide mRNA leader encoded by a DNA region called trpL.

TLS Online TPP Program

#Id: 9405

#Unit 11. Evolution and Behavior

Costs & benefits of territorial defense

Cost

Defending a territory requires time & energy and may, if aggressive defense is  needed, may pose some risk of injury.

Benefits‐

The improved access to resources represents  the 'benefit(s)' of territory defense.