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6 years ago Edited: 6 years ago, lindsaym
 frequency of alleles in MM, MN, and NN blood The M and N factors are glycoproteins that are found on the surface of red blood cells. Unlike other types of red blood cell antigens, The M and N factors do not cause antibody reactions in human blood transfusions. People with type M blood are homozygous for the M allele, and people with type N blood are homozygous for the N allele. Heterozygous individuals have type MN blood. In a study of population of Inuit living in the Northwest Territories, 512 people have blood type M, 256 had blood type MN, AND 32 has blood type N. Now as for my questions...A) Calculate the frequency of each allele, M and N , in the population studied.B) WHat would be the expected frequency of each genotype in the next generation, assuming that this population is in genetic equilibrium for the trait.C) In a second study group, the frequencies of the genotypes were 0.306 MM, 0.491 MN, AND 0.203 NN. Could this second study group have, in fact, come from the previously described Inuit population? Explain your answer...for a) i did thisMM=p^2NN=q^2MN= 2pqq^2=32/800=0.04q^2= 0.2p^2=512/800=0.64p sqrt = 0.82pq=256/800 = 0.32to check=p^2 + 2pq + q^2 = 10.04 + 0.64 + 0.32 = 1So the frequency of the M allele is 0.64 or 64% the frequency of the N allele is 0.04m or 4% and the frequency of the MN allele is 0.32 or 32%..not sure if im on the right track. and i have no idea how to do b) or c)Post Merge: 6 years agojust realized i was doing question wronga is looking for the frequency for the m allele and n allele M allele is 512(2) because each person has 2 M alleles, then + 256, for each person with 1 M alleleso M = 12801280/1600=0.8N allele = 32(2)+256=320320/1600=0.2so would the allele frequencies be M=0.8 and N=0.2?Post Merge: 6 years agob.)2pq=256/800 = 0.32or=2(0.8)(0.2)=0.32p^2 + 2pq + q^2 = 10.64 + 0.32 + 0.04 = 1So the frequency for the genotypes in the next generation would be MM=0.64 or 64%, NN=0.04m or 4%, and MN=0.32 or 32%...just stuck on c now. Read 12617 times 19 Replies
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6 years ago
 i posted this question also and was directed to the video. I still dont get it. Anyone help me out?
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Educator
6 years ago
 https://biology-forums.com/index.php?topic=53374 ... posted a reply here.
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6 years ago
 thank you !
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Educator
5 years ago
 For C), it might now be possible due to the percentages... Attached file Thumbnail(s): You must login or register to gain access to this attachment.
Farheen98
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On Hiatus
5 years ago
 thanks bio man
 Machiavelli
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5 years ago
 Thank you so much I was stuck on the last question and needed help to figure it out!
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5 years ago
 Thanks
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4 years ago
 im still a little confused :\
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3 years ago
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3 years ago
 The answers that you guys got were the same as mine, but how do you explain c) in words??
Farheen98
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3 years ago
 Thnx bio_man ,this was really helpful
wrote...
2 years ago
 Quote from: bio_man (6 years ago)https://biology-forums.com/index.php?topic=53374 ... posted a reply here.Hey Bioman! Can you help me solve this question?The M and N factors are glycoproteins that are found on the surface of red blood cells. Unlike other types of red blood cell antigens, the M and N factors do not cause antibody reactions in human blood transfusions. People with type M blood are homozygous for the M allele, and people with type N blood are homozygous for the N allele. Heterozygous individuals have type MN blood. In a study of a population of Inuit living in the Northwest Territories, 640 people had blood type M, 320 had blood type MN, and 40 had blood type N. Calculate the frequency of the genotypes in the population studied. Show all of the steps to your solutions. it's a little different.. Thanks
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2 years ago
 Every time somebody says "Thanks Bio Man" it sounds like they are talking to a super hero
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