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Biology 9 Online
OpenStudy (anonymous):

When calculating allele frequencies in the Hardy-Weinberg equation, why can you not simply use the dominant phenotype to calculate p? A-You actually can calculate p from the dominant phenotype by dividing the number of dominant individuals in a population by the total number of individuals in a population. B- The dominant phenotype cannot be calculated because the total number of individuals in the population is unknown. C- The dominant phenotype is represented by pand q. D- The dominant phenotype represents both homozygous and heterozygous genotypes.

OpenStudy (anonymous):

I say C need second opinion

OpenStudy (anonymous):

@shrutipande9

OpenStudy (shrutipande9):

see...i will give u an eg... Y is yellow seeds and y green seeds. Now YY and Yy give yellow seeds. But p in hardy weinberg only gives frequency of dominant allele. we also need 2pq to find out frequency of heterozygotes. because heterozygotes also give dominant phenotype

OpenStudy (anonymous):

after reading yhat i still say C . Unless im wrong and i can do more research.

OpenStudy (anonymous):

Now im looking at B

OpenStudy (shrutipande9):

see...Y is dominant allele...and yellow seeds in dominant phenotype. we can get dominant allele when we have Y but if we want dominant phenotype then we can get it with YY or Yy. u get me?

OpenStudy (anonymous):

So b

OpenStudy (shrutipande9):

nope

OpenStudy (anonymous):

I know its not D, and if its not B, then either A or C

OpenStudy (anonymous):

I dont think its A

OpenStudy (shrutipande9):

y do u think its not D or B?

OpenStudy (anonymous):

Bcause the punnet square gives us the results so we know the numbers

OpenStudy (anonymous):

its D @shrutipande9

OpenStudy (anonymous):

In the equation, p represents the frequency of the dominant allele and q is the frequency of the recessive allele. An easy way to remember this is that in the alphabet, p comes before q, and in genetics, the dominant allele is written before the recessive allele.

OpenStudy (shrutipande9):

cool..:D

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