networks

At each pole, the gathering chromosomes become less distinct as they merge into a network The nucleolus reappears at each pole. A newly formed nuclear membrane encloses the chromatin network. Thus two daughter nuclei are formed. The number of chromosomes in each daughter nucleus..

This is a prominent, spherical or oval structure found at the centre of the cell. It is the controlling centre of all cell activities and has been described as the brain of the cell. It regulates all metabolic and hereditary activities of the cell. The nucleus is composed of the following structur..

Chromosomes (chroma = colour, soma = body) are tiny thread-like structures found in the nucleus of a cell. In a non-dividing cell they appear as a chromatin network while during cell division they become condensed to form short and thick chromosomes. Chromosomes are unique cell stru..

If a leaf shows one vein more prominently than the others, it is described as unicostate condition. This prominent vein runs from the base of the leaf blade to its apex in a median longitudinal position. Hence it is the midrib of the leaf. The midrib produces veins which proceed towards the margin..

In eukaryotes, the genes that code for the enzymes needed to catalyse the various steps of a particular metabolic pathway may not be adjacent or even be in different chromosomes. However, these genes are regulated by operon model as in bacteria. Both the inducible and the repressible systems ..

In long-distance lines, losses are so high that satisfactory operation becomes impossible without the use of amplification. Amplifiers for telephone service are known as repeaters, and they must of course function in both directions along the line. Repeater stations are ordinarily installed at 50-m..

Characteristics, distribution, and migration of human populations on Earth's surface Characteristics, distribution, and complexity of Earth's cultural mosaics Patterns and networks of economic interdependence on Earth's surface Processes, patterns, and functions of human settlemen..

Characteristics, distribution, and migration of human populations on Earth's surface Characteristics, distribution, and complexity of Earth's cultural mosaics Patterns and networks of economic interdependence on Earth's surface Processes, patterns, and functions of human settlemen..

Characteristics, distribution, and migration of human populations on Earth's surface Characteristics, distribution, and complexity of Earth's cultural mosaics Patterns and networks of economic interdependence on Earth's surface Processes, patterns, and functions of human settlemen..

Characteristics, distribution, and migration of human populations on Earth's surface Characteristics, distribution, and complexity of Earth's cultural mosaics Patterns and networks of economic interdependence on Earth's surface Processes, patterns, and functions of human settlemen..