Recombinant chromosomes have too many copies of some genes and no copies of others, so gametes that receive the recombinant chromosomes cannot produce viable progeny.

TLS Online TPP Program

#Id: 5847

#Unit 10. Ecological Principles

Ecosystem replacement - replaces the original community with a different one

TLS Online TPP Program

#Id: 4763

#Unit 5. Developmental Biology

SKN-1 also inhibits PAL-1 (preventing it from becoming active in the EMS cell).

TLS Online TPP Program

#Id: 9743

#Unit 6. System Physiology – Plant

Glycosylated triterpenoid compound avenacin A1, found in oat (Avena sativa) roots The wheat root pathogen Gaeumannomyces graminis var. tritici is extremely sensitive to avenacins

TLS Online TPP Program

#Id: 5943

#Unit 10. Ecological Principles

Components of primary production

a. Gross primary production - Total organic matter production including reparatory loss during measurement of period.

b. Net primary production - Amount of matter accumulated by plant per unit area given time. 

 Gross – net = respiration 

TLS Online TPP Program

#Id: 4682

#Unit 13. Methods in Biology

Colorimetric Assays for Cell Division Are Rapid and Eliminate the Use of Radioactive Isotopes