year-round flow of water in rivers

conserving rare and threatened species

preventing soil erosion

generating environmental awareness

Vallisneria

Typha

Azolla

Salix

5'-GAATTC-3'
3'-CTTAAG-5'

5'-GATACC-3'
3'-CCTAAG-5'

5'-CCAATG-3'
3'-GAATCC-5'

5'-CATTAG-3'
3'-GATAAC-5'

The relative proportions of purines and pyrimidines in DNA

The relative amount of DNA in the ridges and grooves of the fingerprints

The relative difference in the DNA occurrence in blood, skin and saliva

Satellite DNA occurring as highly repeated short DNA segments