anonymous
  • anonymous
Help with any of these please? 1. Among human beings ABO blood type is determined by a single gene with not two but three alleles. Could we modify the Hardy-Weinberg equation to cover this case or does it simply not apply? If the frequency p of the allele Ia is 0.3 and the frequency q of the allele Ib is 0.2, what is the frequency r of the allele Io? What are the frequencies of the genotypes IaIa, IaIb, IaIo, IbIb, IbIo, and IoIo?
Biology
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
2. On the planet Omicron sexual reproduction takes place in a manner not found among earthly organisms. Gametes are haploid, as on earth, but zygotes (and hence mature organisms) are triploid. Therefore, fertilization requires the fusion of three gametes rather than two and the participation of three "parents" rather than the two we are used to here on earth. Can the Hardy-Weinberg equation be modified to cover this situation, or does it simply not apply? If a trait is determined by a gene having two alleles, and among a certain Omicronian population one allele has a frequency p of 0.3 and the other allele has a frequency q of 0.7, what are the expected frequencies for the various possible genotypes? How many possible genotypes are there? 3. Suppose the environment in which a population was living changed in some way and the new conditions were much more harmful to homozygous dominant individuals and to heterozygotes than to homozygous recessives? What would happen to p and q as the years went by? If this selective pressure against homozygous dominants and heterozygotes suddenly ceased and no other factors changed, what would happen to p and q? 4. Many deleterious genes are recessive and therefore are expressed only in the homozygote. Many of them are also utterly lethal. Many of them have also been present in the human gene pool for hundreds of thousands and possibly even millions of years. How do you explain the persistence of these genes over such long periods of time in the face of such intense selective pressure against them?
anonymous
  • anonymous
what subject is this
anonymous
  • anonymous
@mrasb2011

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anonymous
  • anonymous
biology. Hardy-Weinberg theory dealing with evolution and natural selection
anonymous
  • anonymous
check your inbox
anonymous
  • anonymous
give me a minute to try and find the answers for you
anonymous
  • anonymous
does this help with the first one chromozo... Do it for as many alleles as you want! p+q=1 ---> p+q+r=1 p^2+2pq+q^2=1 ----> p^2+2pq+q^2+2pr+r^2+2qr=1 When we do more than this number of alleles then we start using mathmatical notation. You should learn it; it might be strange at the start but it allows you to write the hardy weinberg equations for many alleles with just a few symbols.
anonymous
  • anonymous
ignore the chromozo I did not meen to put that in
anonymous
  • anonymous
i think thats a start for the 1st one.
anonymous
  • anonymous
so yes that helps with the first question
anonymous
  • anonymous
ok let me look for something to help with the second one
anonymous
  • anonymous
sorry I cant find anything on the second one let me try with the third I am doing my best but if I am correct you are in collage and I am in highschool so if I cant give all the answers your best bet would be to google them
anonymous
  • anonymous
does this help h the third one p = frequency of the dominant allele in the population q = frequency of the recessive allele in the population ___________  If by how you state, the dominant over the offspring, those faults or traits would carry over, but of themselves, only within context of the environmental change, would affect those contaminate with that change, at that time, whether positive like more oxygen in air, or negative, like loss of food source,  If over time, as moderately set, then adaptation of those in preset environment would adapt accordingly, if stringent, that may fault and die out, or seek recovery and improve traits, for that specific environment,  circumstances relevant to the situation in scenario of changes constitute reactions and resultants, variables may not be present until second generation,
anonymous
  • anonymous
@mrasb2011

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