What is multiple alleles , Biology

Assignment Help:

What is Multiple Alleles ?

Obviously, diploid organisms, such as humans can have only two different alleles for a certain gene locus. However, new alleles are continuously being produced by mutations, so that within a species there may be multiple alleles for every gene.

The ABO blood type in humans is a familiar example of multiple alleles for a given trait. These genes control the synthesis of glycoproteins that protrude from the surface of red blood cells. Alleles for types A and B (IA and IB) are codominant. The allele IO for type O blood produces no glycoproteins at all, so both type A and type B are dominant over type O.

Individuals are either AA or AO, BB or BO, AB, or O. Alleles AO are classified type A, and BO are type B. Type O is always OO. Type B individuals have proteins called type A antibodies that cause Type A blood to clump in their blood. Type A individuals have type B antibodies, and Type O individuals have both type A and type B antibodies. Because they have no antibodies to either type A or type B glycoproteins and can receive blood donations from each of the blood groups, persons with type AB blood are called universal recipients. Persons with type O blood that does not contain glycoprotein antigens are universal donors.

 


Related Discussions:- What is multiple alleles

Define clinical progress for treatment for pem, Define Clinical progress fo...

Define Clinical progress for treatment for pem? Normally, clinical improvement is evident within a week with the disappearance of oedema, The appetite improves almost dramatica

Explain about ridge mapping, Explain about Ridge mapping Ridge relation...

Explain about Ridge mapping Ridge relationship is also critical especially in cases with multiple implants and fixed prosthesis, which is an advanced treatment procedure. But,

Define glycogen , A glycogen molecule having entirely of glucose uni...

A glycogen molecule having entirely of glucose units, many of that are linked in long chains through α1-4 bonds.  Furthermore,  every  10  units  or  so,  the  chain  is branched

What are the responsibilities of cber, Question 1: Explain how drug app...

Question 1: Explain how drug approval is obtained through various Regulatory Bodies in India using a flow diagram? List out the different regulatory bodies in India L

Explain the oxidative phase of the pentose phosphate pathway, With the help...

With the help of reaction briefly explain the oxidative phase of the pentose phosphate pathway. The oxidative branch of the pathway generates NADPH and pentose-5 phosphate, th

Cleft grafting, Cleft grafting  The stem of the stock is cut across....

Cleft grafting  The stem of the stock is cut across. A 'V' shaped insertion is made at the end of the stock. The scion is cut in shape. The scion is inserted into the 'V'

Some common air pollutants: oxides of nitrogen, Oxides of nitrogen:   ...

Oxides of nitrogen:          These include nitrogen monoxide (NO) and nitrogen dioxide (NO2). NO is a colourless, odourless and inert gas but like CO it can also combine with

Mutual supplementation of protein with legume and milk, Define Mutual suppl...

Define Mutual supplementation of Protein with legume and milk? Improvement of cereal diets with legume and milk proteins: The proteins of poor diets based on different cereals

Enumerate the anatomic consequences of edentulism, Q. Enumerate the anatomi...

Q. Enumerate the anatomic consequences of edentulism? The anatomic consequences of edentulism include the effect of edentulism on bone and soft tissues. Basal bone forms the de

Why is blood significant for larger animals, What is the alternative means ...

What is the alternative means for transport of substances in animals without a circulatory system? Why is blood significant for larger animals? In animals that do not present t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd