Author: Reese Bannister

Molecular Basis of Inheritance in the Human are as follows: Image Source: dsas9a9gxtv2e.cloudfront.net(a) Transcription, ADVERTISEMENTS: (b) Polymorphism,(c) Translation, (a) Transcription: The process of copying genetic information from one DNA strand into RNA is called as transcription.During the process of coping only one DNA strand is copied and once the process is set the total DNA of the organism is copied. ADVERTISEMENTS: Only the difference is that instead of adenine pairing with thymine, uracil is paired. The RNA thus made is m RNA that is further translated into proteins as per the DNA message. (b) Polymorphism: The phenomenon of repeated occurrence of DNA sequences in a DNA molecule is called polymorphism.It forms the basis of genetic mapping of human genome as well as DNA finger printing. No two individuals can have…

5 Important steps that a plant breeder have to undertake in developing a new genetic variety of plant are as follows: Image Source: ontariobeans.on.ca 1. Germ plasm collection: The plant breeder has to develop a collection of all varieties of the crop. i.e. wild, species and relatives. This is done for exploitation of natural genes available in the population. 2. Evaluation and selection of parents: ADVERTISEMENTS: The germplasm is evaluated and plants are identified for the desirable combination of characters. The selected plants are multiplied for creating pure lines of the crops. 3. Cross hybridization: This step involves the production of hybrids by cross hybridization/breeding. The hybrid progeny will have the desirable traits of both parents crossed.It is not an easy and one step go as it is not necessary…

Essay on the Main Patterns of Distribution of Biota over the Globe !The plants and animals exhibit the following specific patterns of distribution over the globe: 1. Continuous Distribution: A taxon distributed throughout the world in all climatic zones or in all the continents in at least one climatic zone is said to have continuous distribution. It is of the following types:. image source: desertbruchid.net ADVERTISEMENTS: Cosmopolitan distribution:Such a taxon or a species occurs in all climatic zones. The common plant species of nearly cosmopolitan distribution are Chenopodium album, Taraxcum offi­cinale, Phragmites communis, Urtica dioica, Poa annua, etc. Among the animals the following species have cosmopolitan dis­tribution: Tyto Alba, Ardea cineria, Falco pereginus, Vanessa cardui, Nonrrophria noctuella, and Macrobiotus hufelandi.Circumpolar distribution: ADVERTISEMENTS: Certain species such as Saxiphraga oppositaefolia, Carex lapponica,…