Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Gene or point mutations occur when the DNA sequence of a gene is altered and the new nucleotide sequence is passed on to the offspring. This occurs either due to addition or deletion or substitution of one or a few nucleoticles. Nucleotide substitutions can be either transitions or transversions. Transitions are replacements of a purine by another purine (A by G or vice versa) or a pyrimidiile by another pyrimidine (C by T or vice versa). Transversions are replacements of a purine by the pyrimidine or vice versa (G or A by C or T or vice versa). We will briefly explain the different types of gene mutations.
a) Substitutions : substitution of one base by another would result in an altered amino acid in a polypeptide chain. For instance triplet AAT in DNA (UUA in mRNA) would specify leucine. But if the first A is ieplaced by C, it will code for valine. Some of the codons are degenerate and substitutions may not alter the amino acid specified. For instance, in the triplet AAT if the first A is replaced by G the amino acid coded would still be leucine. Gene mutations which do not normally affect the active site of a protein will not alter its biological functions. But nucleotide substitutions that change a triplet coding lor an amino acid into a termination codon would produce adverse effects. Once again in AAT, if the second A is replaced hy T (An), the resulting rnRNA codon IJAA is a termination codon. When a termination codon is present in the middle of an mRNA molecule the subsequent codons are not translated and an incomplete polypeptide will be released from ribosomes.
What is HACCP? HACCP, as you may already know, is an acronym that stands for Hazard Analysis Critical Control Point, a systematic, science-based approach used in food
Q. What is predatism? The Predatism is the ecological interaction in which one individual kills or mutilates another to get food. The Predatism is an inharmonious (negative) ec
Zoonotic diseases and trade Disease and trade have a long-standing, interwoven history. During the 14th century, Europeans realized the value of exotic nature of goods and mat
Determine the representation of the Nucleus In all eukaryotic cells, the nucleus represents the most prominent and conspicuous organelle of the cell, and is generally seen as a
Flexibility Exercises and Examples In flexibility exercises, movable joints allow one or more of the following types of movements. Flexion - Flexion decreases the joint ang
Explain the Periodontal consideration Periodontal consideration would include: Hard Calculus Build up: Any index assessing the amount of calculus build up can be used .
Gluconeogenesis synthesizes glucose from noncarbohydrate precursors, involving pyruvate and lactate, citric acid cycle intermediates, the carbon skeletons of most glycerol and amin
Congenital Aortic Stenosis : The valve may be unicuspid, bicuspid or tricuspid. Rarely it is a dome shaped diaphragm. Uni commissural aortic stenosis produces significant sy
uses and advantages and disadvantages of immunolocalization
Cornea - Organogenesis of Eye and Limb The fully formed cornea contains 2-cell layered epithelium and the stroma made of extra cellular secreted materials. The bulk of the
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd