Mutations in dnaA render replication asynchronous, which suggests that DnaA could be the “titrator” or “clock” that measures the number of origins relative to cell mass.

TLS Online TPP Program

#Id: 8441

#Unit 10. Ecological Principles

Landscape metapopulation model - A population model that considers both differences in the quality of the suitable patches and the quality of the surrounding matrix.

TLS Online TPP Program

#Id: 8473

#Unit 1. Molecules and their Interaction Relevant to Biology

Beta sheets usually have their B strands either parallel or antiparallel

TLS Online TPP Program

#Id: 8759

#Unit 1. Molecules and their Interaction Relevant to Biology

Hydrogen bonds, which are central features of protein structures, make only minor contributions to protein stability.

TLS Online TPP Program

#Id: 5843

#Unit 10. Ecological Principles

Character                     early-stage     late stage 

Root to shoot ratio                    high               low

Number of seed                          many             few

Seed size                                      small             large

Biotic potential                           high              low

Productivity per biomass           high              low

NPP                                              high              low

P/R ratio                                       >1                =1

Nutrient cycling                          open             closed

Importance of detrivores           less                more

Stratification                               No                Yes 

Regeneration ability                   more             less

Resistance ability                        less               more

TLS Online TPP Program

#Id: 4020

#Unit 2. Cellular Organization

Local genome alteration, termed kataegis involves activation-induced deaminase (AID)

Chromothripsis entire chromosomes or large parts thereof are shattered (thripsis in Greek means “shattering”) and stitched together again in what appears to be a random manner, leading to dozens or sometimes even hundreds of rearrangements.