ORC is an initiation complex whose binding identifies an origin of replication.

TLS Online TPP Program

#Id: 606

#Unit 2. Cellular Organization

N binds to RNA transcribed from DNA containing a nut sequence. Thus, once RNA polymerase has passed a nut site, N binds to the RNA and from there is loaded on to the polymerase itself. In this state, the polymerase is resistant to the terminators found just beyond the N and cro genes. 

TLS Online TPP Program

#Id: 3251

#Unit 3. Fundamental Processes

5-bromouracil induces transitions in both directions, A:T ↔ G:C.

TLS Online TPP Program

#Id: 3801

#Unit 5. Developmental Biology

Cell Aggregation & Differentiation is common to all Dictyostelids.

It consists of an interconnected programme of cell movement and cell differentiation.

TLS Online TPP Program

#Id: 6033

#Unit 3. Fundamental Processes

Failure to remove a flap rapidly can have important consequences in regions of repeated sequences such as deletion and duplication

TLS Online TPP Program

#Id: 8000

#Unit 10. Ecological Principles

No two different species can share the same niche but can have similar niches,  this is because of competition for resources like food, space etc

Two species cannot coexist permanently in a community if their niches are  identical