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!
In the preceding section we emphasised the fact that cvolution or the continuous adaptations to the environment can take place only when pheiiotypes exhibit variability. In the absense of variability, the chances arc that existing living organisms would become extinct since with the change in the environment these organisms would die without leaving progeny. Fortunatcly in living systems mutations and recombinations generate the required variability. However, organisms often strive to arrive at populations which are more or less uniform. This is possible because selection process acts in such a way that a certain degree of uniformity of phenotype is imposed among individuals of n population. If an individual were to be vcry different in some way from thc rest of the population. he would be less well adapted to the environment as compared to other members of the population and therefore unable to compete successfully with them. However, in a continuously changing environment, a slight phenotypic variability should be maintained in a population. In a changing environment no phenotype remains optimally adapted for long. This is the precise reason why variability needs to be generated continuously in a population and used to develop adaptations in the way Darwin suggested. We shall look into the mechanisms that generate variability.
Improper Prosthetic Designing is also a cause of failure and it reiterates the importance of planning the case with the end in mind. The choice between fixed or removable prost
what is the fate of corpus luteum if egg gets fertilised ?
In experimental studies, gene therapy has been shown to improve failing human myocardial function. The abnormal function of myocytes obtained from patients with dilated cardiomyop
Q. What are the major structures of chloroplasts? Chloroplasts are involved by two membrane layers the inner and the outer membranes. Inside the organelle the formative unit is
Explain Neurologic disease For patients with facial nerve palsy alone, oral doxycycline or amoxicillin may be effective. Patients with other neurologic involvement, such as men
Q. Incineration Treatment technologies for health-care waste? It used to be the method of choice for most hazardous health-care wastes and is still widely used. It is a high te
Q What is the usual reproduction cycle of a DNA virus? A usual virus has proteins on its capsid that bind to the outer membrane of the host cell. In the place where the virus a
Determine the use of OPG An OPG is used to see the possibility for an anterior loop which is found to extend about 1-3 mm anterior to the mental foramen in about 12 per cent
Q. Can you briefly explain about parasitism? The Parasitism is an inharmonious interspecific ecological interaction in which individuals of a species (the parasites) explore or
A cross among wild-type fruitfly Drosophila melanogaster [normal bristles and grey body (s+s, e+ e)] with a mutant fly [short bristles and ebony body (ss ee)] produces following p
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