Anagha .J.H − Profile

restriction enonuclease functions by inspecting the entire length of the DNA sequence. once it find a specific recognition site it cut the strand of the ouble helix on the specific points.

*they are used as the biological control agents

*they are species specific

*they have narrow spectrum insecticidal application

*they cause no impact for plants mammals birs etc

symptoms: muscular pain

fever

anemia

internal bleeding

blockage of intestinal passage

cause: eggs of the parasite are excreted along with the feaces of infected persons which contaminate soil, water, plants,etc.

 (i) There is some linkage between all genes located on the same chromosome. The linkage strength depends on the percentage of the distance between the two, But linkage can be easily broken by crossing over.
(ii) When genes located on the same chromosome, then . there is possibility of two situations, either a crossing
over between the two genes or no crossing between two genes.
(iii) Crossing over always occurs if genes are located very far from each other – 50% recombinants, 50% parental. Example :Morgan hybridized yellow-bodied, white-eyed females to brown-bodied, red eyed males and intercrossed their F progeny. He found that the genes for white and yellow were very lightly linked and showed only 13% recombinant while white and miniature wing showed 37.2% recombination.

the pink colour is due to the combined expression of the alleles of the re an white coloure flowers.

hence it cannot be said as blening.

mycorrhiza- mutualism

It states that two closely related species competing for the same resource cannot coexist indefinitely and the competetively inferior species will be eliminated.

lysozyme- bacteria

chitinase- fungi

An aliene piece of DNA cannot multiply itself in the chromosome because they require specific seqence called recognition site.

 C peptide bond in the proenzyme is useful in the biosynthesis of  insulin