Most protein-encoding genes, the synonymous rate of change is considerably higher than the nonsynonymous rate because synonymous mutations are tolerated by natural selection

TLS Online TPP Program

#Id: 8100

#Section 2: General Biology

Sphingolipids contain a single fatty acid, in amide linkage to the sphingosine backbone.

TLS Online TPP Program

#Id: 9266

#Section 2: General Biology

N2 constitutes about 80% of the earth’s atmosphere, but the stability of its triple bond renders it inert and metabolically inaccessible to most organisms.

TLS Online TPP Program

#Id: 9285

#Section 2: General Biology

O2‐sensitive hemoprotein kinase FixL controls a regulatory cascade that activates transcription of nitrogen fixation genes

TLS Online TPP Program

#Id: 9150

#Section 3: Genetics, Cellular and Molecular Biology

Positive assortative mating refers to a tendency for like individuals to mate. For example, humans exhibit positive assortative mating for height.

TLS Online TPP Program

#Id: 8969

#Section 3: Genetics, Cellular and Molecular Biology

The amount of genetic variation by examining phenotypic variation was difficult because many traits, a complex interaction of many genes and environmental factors determines the phenotype