tests of selection

It is a process of selective improvement of a crop. In selection, a plant is selected based on its genotypic and phenotypic characters in order to improve some of its characters in its next generatio..

Selection is an important technique in plant breeding. It involves picking the healthiest and the best ones out of the entire crop and reproducing them under controlled condition..

It is a process of selective improvement of a crop. In selection, a plant is selected based on its genotypic and phenotypic characters in order to improve some of its characters in its next generation. Natural selections have occurred in many crops, where som..

Agriculturists and farmers select component crops for mixed cropping based on certain criteri..

A teacher wants 4 of her 10 students to write a skill test. In how many ways can she select 4 students? => 210 or 220 or 215 or 205..

Desirable plants are selected purely based on phenotype and pooled. They are allowed to be grown in mass in next generation. Further selections are made in 3-4 such generations to consolidate desirable characters by ignoring plants with undesirable character at each selecti..

Optically active adsorbents can selectively adsorb some other optically active substances. For e.g., Henderson and Rule in 1939 used dextro-lactose as an adsorbent to separate active constituents of racemic campho..

Darwin believed that nature selects only those individuals, which have favourable variations and thereby have competitive advantage over others. This process is known as natural selection. The members of any particular species can develop and survive only when they are able to ..

Beetles with brown genes escaped predation as their colour became one with the environment and they remained as if hidden. In the process they survived to reproduce more frequently than beetles with green genes. This allowed more brown genes to go into the next generation. In another situation an ..

As the nephric filtrate moves in the nephron towards the collecting tubule, about 99% of water, whole of glucose and amino acids, most of the Na + and Cl, some urea and uric acid are reabsorbed back into the blood. This process by which only useful substances are reabsorbed from the nephric filtr..