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

What are the main human blood group systems, What are the main human blood ...

What are the main human blood group systems? In humans the major blood group systems are the ABO system, the Rh system and the MN system.

Nurse case management , Organizational assessments are vital to the introdu...

Organizational assessments are vital to the introduction of Nurse Case Management (NCM) and Clinical Nurse Leaders (CNL)  ( I am in school for the CNL) Use the guidelines below

Efficiently generate and amplify cdna, Your methods so far have given some ...

Your methods so far have given some success! You now want to look at many different tissues in several individuals, some of whom have the mutation, some who are controls. How can y

Explain the loss of carotenoids, Explain the loss of carotenoids In pro...

Explain the loss of carotenoids In processing fruits and vegetables, loss of carotenoids into cooking or canning water is very slight. However, carotenoids undergo oxidation wh

Microorganisms, discuss the importance of protozoa to humans

discuss the importance of protozoa to humans

Diffusion, applications of diffusion

applications of diffusion

What is atopic dermatitis, Atopic dermatitis is an inflammatory skin diseas...

Atopic dermatitis is an inflammatory skin disease. This disease is observed frequently in young children. There will be skin eruptions.

Pullorum disease (bacillary white diarrhea), P u l l orum disease (baci...

P u l l orum disease (bacillary white diarrhea) This disease is caused by poultry-adapted strain of Salmonella genus- Salmonella Pullorum and considered an important hatc

Why dietary obtainment of iodine important for thyroid, Q. Why is the dieta...

Q. Why is the dietary obtainment of iodine so important for thyroid functioning? The obtainment of iodine from the diet is vital for the thyroid because this chemical element i

Erythema marginatum, This is a rare manifestation seen in less than 5 per c...

This is a rare manifestation seen in less than 5 per cent of ARF patients. It is erythematous, macular, evanescent, non-pruritic rash with pale centre and serpiginous or rounded bo

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