chemistry

posted by .

The following is a question on a lab I do not understand and need help with (thank you).

Topic: Hardy-Weinberg

In this Scenario, we will assign initial genotypic frequencies.
1. Record your class population's data in Table 3A.
2. Record your assigned genotype in Table 3B.
Find a partner and begin mating, as you did for scenario one.
NOTE: The double recessive genotype is lethal, so offspring who inherit the aa genotype will die. If you produce an offspring with the aa genotype, your offspring will die.Since our populatino is to have zero-population growth, parents who produce aa offspring must continue to mate until two viable offspring are produced. For the purposes of the excersis, "aa" individuals in the parental generation will not be considered lethal; instead we will assume the lethality emerges onlt in the F1 generation. Individuals in the parental generation with the aa phenotype sshould ensure they do not mate with another aa individual.
4. Again, you mate five times, recording the genotypes of your offspring in Table 3B and circling which offspring's genotype you assumed.

THE FOLLOWING IS MY DATA:
Table 3A: CLASS DATA TABLE FOR SCENARIO: SELECTION AGAINST RECESSIVE GENE (PARENTAL GENERATION)
Total number of individuals
nAA=12
nAa=15
naa=0
Total:27

Genotypic frequencies
p^2=
nAA/nTotal=0.444

2pq=
nAa/nTotal= 0.555

q^2=
naa/nTotal = 0

Allele frequencies
p = freq(A) = 0.722
q = freq() = 0.278

Table 3B: INDIVIDUAL DATA TABLE FOR SCENARIO 2

My initital Genotype = AA

Generation
F1
F2
F3
F4
F5

Offspring 1
Aa
AA
AA
Aa
Aa

Offspring 2:
Aa
AA
AA
AA
AA

My final (F5) genotype: AA


THE FOLLOWING IS THE ACTUAL QUESTION I AM HAVING A PROBLEM WITH:

Perform the chi-square test for Scenario 2, and answer the questions that follow.

Table 3D: CHI SQUARE DATA FOR SCENARIO 2:

Null Hypothesis:___________________

Expected results for AA: ____________
Expected results for Aa: ____________
Expected results for aa: ____________

Observed results for AA: ____________
Observed results for Aa: ____________
Observed results for aa: ____________


Calculation of chi square statistic:
x^2 = (O − E)2/E

  • chemistry -

    This is a duplicate post.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. biology

    A population shows 81% have the dominant phenotype. If Hardy-Weinberg conditions are met, what will be the genotypic frequencies in the next generation?
  2. chemistry

    The following is a question on a lab I do not understand and need help with (thank you). Topic: Hardy-Weinberg In this Scenario, we will assign initial genotypic frequencies. 1. Record your class population's data in Table 3A. 2. Record …
  3. chemistry

    The following is a question on a lab I do not understand and need help with (thank you). Topic: Hardy-Weinberg In this Scenario, we will assign initial genotypic frequencies. 1. Record your class population's data in Table 3A. 2. Record …
  4. biology

    1. A population which meets the hardy- weinberg requirements: a. Evolves b. is small and usually isolated c. has allele frequency in equilibrium d. changes genotypic distribution from generation to generation e. always has 75% A and …
  5. Biology

    You are studying a large population of claims of which 396 are pink (t) and 557 are Tan (T). Tan clams are completely dominant over pink clams. Calculate the following: 1. The frequencies of each allele. 2. The expected genotypic frequencies. …
  6. Biology (Please Help: Urgent)

    The Hardy-Weinberg formulas allow scientists to determine whether evolution has occurred. Any changes in the gene frequencies in the population over time can be detected. The law essentially states that if no evolution is occurring, …
  7. genetics math

    2. Genotypes of leopard frogs from a population in central Kansas were determined for a locus (M) that encodes the enzyme malate dehydrogenase. The following numbers of genotypes were observed: Total sample studied = 107. Genotype …
  8. Biology Honors

    Hardy-Weinberg: Within a population of birds, 21 percent of them display the recessive phenotype for a particular trait. What are the allele frequencies for this trait assuming the population is in genetic equilibrium?
  9. Biology

    In a population of Mendel's garden peas, the frequency of green-flowered plants (genotype aa) is 49%. The population is in Hardy-Weinberg equilibrium. What are the frequencies of the AA and Aa genotypes?
  10. Biology

    A biologist found that 20% of a population of bats are brown, which is recessive. assuming the population shows Hardy-Weinberg equilibrium, determine the genotype and the allele frequencies of the population?

More Similar Questions