Direct-acting carcinogens

highly reactive compounds that can react with and modify nucleotide bases in DNA, to distort the normal pattern of base pairing.

TLS Online TPP Program

#Id: 4623

#Unit 13. Methods in Biology

A related quantitative technique, rocket electrophoresis, does permit measurement of antigen levels. In rocket electrophoresis, a negatively charged antigen is electrophoresed in a gel containing antibody. The precipitate formed between antigen and antibody has the shape of a rocket, the height of which is proportional to the concentration of antigen in the well.

TLS Online TPP Program

#Id: 9552

#Unit 11. Evolution and Behavior

Gradualism is Darwin’s proposition that the differences between even radically different organisms have evolved by small steps through intermediate forms, not by leaps

TLS Online TPP Program

#Id: 999

#Unit 5. Developmental Biology

The homologue of TGF-β in Drosophila is Dpp.

TLS Online TPP Program

#Id: 6228

#Unit 8. Inheritance Biology

Complete dominance

Type of dominance in which the same phenotype is expressed in homozygotes (AA) and in heterozygotes (Aa)

TLS Online TPP Program

#Id: 3641

#Unit 3. Fundamental Processes

Class I and Class II aminoacyl–tRNA synthetases differ in several ways: Structural motifs, Anticodon recognition, Site of aminoacylation, Amino acid specificity.