Stabilized natural selection

Favor intermediate phenotype but eliminate lower and higher-grade phenotype

It introduced homogeneity in the population

Exp - clutch size of birds that lay too many or too few eggs per nest have lower fitness values than do those that lay an intermediate number of eggs

TLS Online TPP Program

#Id: 8129

#XL - Q Biochemistry

Some other biologically active isoprenoid compounds or derivatives.

TLS Online TPP Program

#Id: 8127

#XL - Q Biochemistry

β-Carotene is the precursor of vitamin A1.
Oxidation at C-15 converts retinol to the aldehyde, retinal, and further oxidation produces retinoic acid, a hormone that regulates gene expression. 

TLS Online TPP Program

#Id: 8126

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 8125

#XL - Q Biochemistry

Steroids derived from cholesterol.

TLS Online TPP Program

#Id: 8120

#XL - Q Biochemistry

Arachidonic acid and some eicosanoid derivatives.

TLS Online TPP Program

#Id: 8119

#XL - Q Biochemistry

The triterpenes are C30 terpenes and include squalene and lanosterol, two of the precursors of cholesterol