A2 Biology..inherited change HELP PLZ!

[thunderingthunder]

1.Explain y Io(gene for blood group o) is recessive to both iA and iB(ie alleles for blood group A and B respectively)..
2.Describe how a single base deletion in the allele Io leads to the synthesis of an inactive protein?
Thank you in advance..

 

[rz123]

Welcome in advance , I will help you later someday (difficult questions)

ok here it is what i understood. i A and i B are both dominant to I o , There has to be one recessive trait in a heterozygous organism which is not expressed and doesn't have any effect, so in this case it is Io. now we can further show that by drawing a genetic diagram of the parents having phenotypes blood group being A and B. there genotypes being I a I o , I b I o

P.S are these two questions from the past papers?

 

[thunderingthunder]

yes these questions are form the past papers...J99..right i somewhat understand your answer for 1..but answer for 2?

 

[rz123]

i m not yet able to do Q.2.

 

[anahita16]

probably because the start codon was damaged? Lol just guessing! I'm not good at biology :%)

 

[rz123]

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