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Home Q & A Board Biology-Related Homework Help General Biology
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adrii01 adrii01
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10 years ago
What is the expected proportion of each genotype in later generations if the population is not evolving?

Because allele frequency is a measure of the proportion of each allele in the population, it will remain constant in any size population over time if the population is in Hardy-Weinberg equilibrium (that is, not evolving). The Hardy-Weinberg equation (p 2 + 2pq + q 2 = 1) describes the genotype frequency distribution of a given generation. Use this equation and the allele frequencies you just calculated to fill in the table below.
p = 0.94
q = 0.06

Suppose you observed 455 individual cockroaches in the infested apartment after 5 years of exposure to hydramethylnon + glucose bait. If the population had not evolved, how many individuals of each genotype would you expect? Round your answers to the nearest whole number.
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#1
Donated
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10 years ago
Don't know this one.  Sorry. Confounded Face
Pretty fly for a SciGuy
adrii01 Author
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#2
10 years ago Edited: 10 years ago, adrii01
Oh okay. I can't show you the other questions because they're blocked until I answer this one.
Post Merge: 10 years ago

This is the hint they provide:

First, you need to determine the expected frequency of each genotype in the population after 5 years. In the previous part, you calculated the following allele frequencies:
p = 0.94
q = 0.06

Use these allele frequencies to calculate the genotype frequencies. Recall that the Hardy-Weinberg principle states that p2 = frequency of homozygotes for one allele, q2 = frequency of homozygotes for the other allele, and 2pq = frequency of heterozygotes in the population. In this case,
p2 = expected frequency of glu+/ glu+
2pq = expected frequency of glu+/ glu–
q2 = expected frequency of glu–/ glu–

After you calculate the three genotype frequencies, multiply each one by the total number of individuals in the population (455) for the total number of individuals expected in this population if the population is in Hardy-Weinberg equilibrium and is therefore not evolving.
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Doctor-2-BDoctor-2-B
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10 years ago Edited: 10 years ago, Doctor-2-B
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Dizzy2015,  spalsburg,  Margaret Hwang
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adrii01 Author
wrote...
#4
10 years ago
Thank you!!
cs1310,  mattata
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#5
10 years ago
402, 51 and 2 are the answers in descending order.
cill2014,  GWhitney,  justanserwme,  amandabraniecki,  inkaaa,  cs1310,  kellstewart,  sparkiecody,  geneflow,  adbuchy,  lizzymary67,  Reader12
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#6
9 years ago
Thanks!
wrote...
#7
9 years ago
The cockroaches ate the most bait when it did not have corn syrup in it, and ate very little of any bait that had corn syrup. Further experiments like this one have shown that it is actually the glucose in the corn syrup that the cockroaches detect and refuse.
wrote...
#8
9 years ago
Thank you!
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#9
9 years ago
does anyone know how to do the first part of the problem??
wrote...
#10
3 years ago
Thanks
wrote...
#11
3 years ago
Thank you!
wrote...
#12
3 years ago
thanks
wrote...
#13
3 years ago
thanks
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