Covalently closed circular dna
(Science: molecular biology) a circular molecule of double-stranded dna which is supercoiled, or coiled up on itself due to internal tensions, because there are no breaks in the phosphate backbone (upon which the nucleotide bases are mounted) to relieve the tensions and allow it to form an open circle.
Covalently closed circular dna (Science: molecular biology) a circular molecule of double-stranded dna which is supercoiled, or coiled up on itself due to internal tensions, because there are no breaks in the phosphate backbone (upon which the nucleotide bases are mounted) to relieve the tensions and allow it to form an open circle...
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..
Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..
