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!
The original DNA sequence when ,transcribed and translated would yield five successive valine residues. But the altered sequence would correspondingly read one aspartate and four serine residues. Mutations resulting from the addition or deletion of base pairs are called frameshift mutations. So far we have discussed the several ways in which the genetic material could be altered. Mutations could be either spontaneous or induced. In recent years there has been a more clear understanding of the causes of mutational process. Tautomeric shifts, ultraviolet radiations, chemicals such as hydroxylarnine, nitrous acid and a variety of alkylating agents can cause permanent alterations of nitrogenous bases. Aromatic compounds such as acridines can cause addition or deletion of one to more than twenty bases in DNA. We have briefly discussed mutations, a way or source of variability in natural populations. Together with recombinations occurring'at the tjnie of meiosis they form the raw materials for selection to act on. Before we discuss briefly about recombination, let us have a quick look at mutation rates in organisms.
Duck plague (duck virus enteritis) Duck plague is the most serious disease caused by a herpes virus (Anatid herpes virus). Though antigenically homogenous, differences in virul
Types of Organization Chart: There are two important types of organization chart. a) Vertical i.e., from top to bottom. b) Horizontal i.e., from left to right.
Q. On which organelle of the cell structure does intracellular digestion depend? What is the chemical content of those organelles? Intracellular digestion take place by the act
Q. What are the angiosperms, the flowering plants? What is the major feature that distinguishes them from the gymnosperms? Flowering plants have seeds and flowers (phanerogamic
Water Absorption and Transpiration The rate of water absorption is controlled by the rate of transpiration. A high water potential in the atmosphere would reduce water loss fr
AQUATIC ADAPTATION IN ANIMALS
A friend of yours suggests that the origin of life on earth is extraterrestrial in origin (an idea known as panspermia). Can you propose a testable hypothesis to determine if this
what is the classification of skeletal tissue?
Explain the Carbohydrates and Fat Requirements during Sepsis? Carbohydrates should constitute nearly 60% to 70% of the total energy. Glucose is the primary calorie substrate in
How to antioxidants work in Cancer Prevention? As cells function normally in the body, they produce damaged molecules called free radicals. These force radicals, we learnt are
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