Question

In: Biology

The observed genotype frequencies will be posted on blackboard as an announcement during class.

 

Part 3 – Calculating allele frequency changes and Hardy-Weinberg proportions

The observed genotype frequencies will be posted on blackboard as an announcement during class. The excel-based Hardy-Weinberg calculator (HWE.xls) will be helpful for filling out the table below.

Focus on the dark colour soil population and calculate allele frequencies, frequencies of heterozygous individuals, etc.

Simulation step

#DD

#Dd

#dd

Observed frequency of D allele

Observed frequency of Dd individuals

Expected frequency of Dd (assuming HWE)

Chi-squared value*

Starting conditions

250

500

250

       

After natural selection in a heterogeneous environment

240

492

127

       

After random mating

328

489

191

       

After gene flow between two populations

305

480

219

       

Solutions

Expert Solution


Related Solutions

You obtain three samples from three different populations. Observed genotype frequencies. Population 1 AA=0.70 ; Aa=0.25...
You obtain three samples from three different populations. Observed genotype frequencies. Population 1 AA=0.70 ; Aa=0.25 ; aa = 0.05 Population 2 AA=0.35 ; Aa=0.55 ; aa=0.10 Population 3 AA=0.45 ; Aa=0.40 ; aa=0.15 Populations 2 and 3 have no barrier between them. But populations 1 and 2, and populations 1 and 3 have a barrier between them. What are the FST values between these three pairs of populations?
For each populations, calculate the expected genotype frequencies to determine which of these populations is NOT...
For each populations, calculate the expected genotype frequencies to determine which of these populations is NOT in Hardy-Weinberg equilibrium. 1 AA, 18 Aa, 81 aa 20 AA, 20 Aa, 5 aa 25 AA, 10 Aa, 1 aa 50 AA, 20 Aa, 30 aa Calculate the Chi-square statistic (rounded to 2 significant figures) to show that your answer choice in the previous question is not in Hardy-Weinberg equilibrium. 3.5    26 34 4.9
Both the SSTS and Circular 230 have been posted on Blackboard for your use in answering...
Both the SSTS and Circular 230 have been posted on Blackboard for your use in answering the following questions. Answer the following questions using the SSTS’s or Circular 230.   For each question cite the Standard or page number and section number of Circular 230 for which your answer is based upon. (Member means tax preparer.) (Disregard the page number) ______ 21.    A member may omit answering a question on a tax return if reasonable grounds exist for omitting the answer...
Download “dict.h” and “dictionary.c” posted on blackboard. a) read both code to figure out what they...
Download “dict.h” and “dictionary.c” posted on blackboard. a) read both code to figure out what they do. b) supply am appropriate content to the main function in “dictionary.c” to demonstrate that you understand the provided code by invoking those functions defined in “dictionary.c” Submit your source code and script files. /* dict.h header for data dictionary routines. */ #include <stdio.h> struct dict_elem{    char d_name[15]; // name of dictionary member    int d_start; //starting position in record    int d_length;...
A distribution and the observed frequencies of the values of a variable from a simple random...
A distribution and the observed frequencies of the values of a variable from a simple random sample of the population are provided below. Use the​ chi-square goodness-of-fit test to​ decide, at the specified significance​ level, whether the distribution of the variable differs from the given distribution. ​Distribution: 0.18750.1875​, 0.18750.1875​, 0.250.25​, 0.3750.375    Observed​ frequencies: 1818​, 1919​, 2020​, 3939 Significance levelequals=0.05
A distribution and the observed frequencies of the values of a variable from a simple random...
A distribution and the observed frequencies of the values of a variable from a simple random sample of the population are provided. Use the​ chi-squaregoodness-of-fit test to​ decide, at a significance​ level of 0.10, whether the distribution of the variable differs from the given distribution. (You need to add the expected column based on the distribution) a.       Specify which Chi-Square test you are doing (Goodness-of-Fit or Test for Independence): b.       Formulate the null (H0) and alternate (HA) hypotheses: c.       Specify the level of...
A distribution and the observed frequencies of the values of a variable from a simple random...
A distribution and the observed frequencies of the values of a variable from a simple random sample of the population are provided below. Use the​ chi-square goodness-of-fit test to​ decide, at the specified significance​ level, whether the distribution of the variable differs from the given distribution. ​ Distribution: 0.3​, 0.2​, 0.2​, 0.2​, 0.1   Observed​ frequencies: 12​, 9​, 8​, 17​, 4 Significance level = 0.10
Biologist survey a large island population of bugs and find the following genotype frequencies for beak...
Biologist survey a large island population of bugs and find the following genotype frequencies for beak length: BB (long)= 0.16 Bb (medium)= 0.48 bb (short)= 0.36 Is the population in Hardy-Weinberg Equilibrium? How can you tell if something is in hardy weinberg equilibrium?
Suppose you used allozymes to estimate allele and genotype frequencies in a natural population as we...
Suppose you used allozymes to estimate allele and genotype frequencies in a natural population as we discussed in class. Now suppose there were a number of silent mutations occurring. Can these be detected using allozymes? What influence would the presence of silent mutations have on your estimates of allele and genotype frequencies from allozyme data?
a)  How is the Hardy–Weinberg Model used to describe allele and genotype frequencies in a Population Gene...
a)  How is the Hardy–Weinberg Model used to describe allele and genotype frequencies in a Population Gene Pool? b) Explain how Natural Selection drives Allele Frequency Change in populations c) Name and explain the three different impacts of selection on a population.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT