Question

Explain the role of multiple alleles in the inheritance of abo blood groups

Answer 1

Hi mate.

Thanks for asking this question.

Here is your answer,



$multiple \: alleles =$


More than two alternative forms of

gene in a population occupying the same

locus on a chromosome are known as multiple

alleles.




(1) Multiple alleles arises by mutation of wild

type of gene.



(2) One wild type of gene can mutate several

times to produce multiple alleles.



(3) They shows series of alternative expression

like dominant, recessive, co-dominance,

incomplete dominance, etc.



(4) The individuals are always with two alleles

of gene presenting on a homologous

chromosome pairs.



(5) wild type of allele is always dominant on

other mutant allele.





#*HUMAN ABO BLOOD GROUP :



(1) ABO blood group is the example of the

multiple alleles and co-dominance.



(2) ABO blood group are controlled by the one

gene ( gene I ).



(3) It has three alleles
${i}^{a}. \: \: {i}^{b} \: \: and \: \: i$


(4)
$allele \: {i}^{a} \: and \: \: {i}^{b} \: \: are \: dominant \\ over \: \: i \: \: while \: both \: are \: \\ co - dominant \: when \: present \: \\ together.$



(5)
$allele \: {i}^{a} \: \: and \: \: {i}^{b} \: \: produce \: slightly \\ different \: from \: the \: sugar \: and \\ \: i \: \: allele \: does \: not \: produce \: any \: \\ sugar.$



Thank you.



BE BRAINLY !!!!!!!!!!!!!!

Answer 2

the genes of blood shows co-dominance. in forms of alleles every gene express it self..
hope I help you