1) A population of zebra mussels has 497 light brown individuals and 763 mottled

Question

1) A population of zebra mussels has 497 light brown individuals and 763 mottled individuals. Assume that light brown is totally recessive. Use “M” to represent the dominant allele and “m” to represent the recessive allele (Hints: p + q =1       p2 + 2pq + q2
=1). What is the genotypic frequency for homozygous dominant (p2), which is MM?

2) A population of zebra mussels has 497 light brown individuals and 763 mottled individuals. Assume that light brown is totally recessive. Use “M” to represent the dominant allele and “m” to represent the recessive allele (Hints: p + q =1       p2 + 2pq + q2
=1). What is the number of heterozygous individuals that you would predict to be in this population?

3) A population of zebra mussels has 497 light brown individuals and 763 mottled individuals. Assume that light brown is totally recessive. Use “M” to represent the dominant allele and “m” to represent the recessive allele (Hints: p + q =1       p2 + 2pq + q2
=1). Conditions happen to be really good this year for breeding and next year there are 2023 young zebra mussels (new generation). Assuming that all of the Hardy-Weinberg conditions are met, what is the expected allele frequency
for the homozygous recessive allele (q), which is m among these young zebra mussels?

4) A population of zebra mussels has 497 light brown individuals and 763 mottled individuals. Assume that light brown is totally recessive. Use “M” to represent the dominant allele and “m” to represent the recessive allele (Hints: p + q =1       p2 + 2pq + q2
=1). What is the expected genotypic frequency for homozygous dominant (p2), which is MM?

5)A population of zebra mussels has 497 light brown individuals and 763 mottled individuals. Assume that light brown is totally recessive. Use “M” to represent the dominant allele and “m” to represent the recessive allele (Hints: p + q =1       p2 + 2pq + q2
=1). How many individuals of the new generation do you expect to be light brown?

6)A population of zebra mussels has 497 light brown individuals and 763 mottled individuals. Assume that light brown is totally recessive. Use “M” to represent the dominant allele and “m” to represent the recessive allele (Hints: p + q =1       p2 + 2pq + q2
=1). An actual count of the number of light brown zebra mussels is 700. You perform a Chi-squared analysis and calculate a Chi-squared value of 28.23. Using the Chi-squared table below, you would correctly conclude that this population _______ in Hardy-Weinberg equilibrium because you ________ the null hypothesis.

7)The intrinsic rate of growth for this population of zebra mussels is approximately 0.81. Which of the following are appropriate units for this? (Helpful equations b=# births/N     d=# deaths/N     r=b-d     G=rN     G=rN(K-N/K)     Nnew=Nold + G)

8)Whenever this population exceeds 5000, there is not enough available food to sustain the population and there is an adjustment over the next few years. If I had 2023 mussels in the population in 2015, how many new mussels would I expect to add to the population in 2016? (Helpful equations b=# births/N     d=# deaths/N     r=b-d     G=rN     G=rN(K-N/K)     Nnew=Nold
+ G)

9)The scarcity of available food when this population exceeds 5000 represents   __________________.
a density dependent population control (Helpful equations b=# births/N     d=# deaths/N     r=b-d     G=rN     G=rN(K-N/K)     Nnew=Nold
+ G)

10)The quagga mussel, another U.S. invader from the Ukraine, is so similar in appearance to the zebra mussel that it is often mistaken for it. Both the quagga mussel and zebra mussel are found in Lake Ontario and Lake Erie; however, the quagga mussel is found in deeper, colder water, which is too cold for the zebra mussel. Which of the following explains the distribution of these two species?

1) A population of zebra mussels has 497 light brown individuals and 763 mottled individuals. Assume that light brown is totally recessive. Use “M” to represent the dominant allele and “m” to represent the recessive allele (Hints: p + q =1       p2 + 2pq + q2
=1). What is the genotypic frequency for homozygous dominant (p2), which is MM?

Explanation / Answer

(1)

Answer:

light brown (recessive) = 497/ (497+763) =0.39

q=0.39

q2=0.152

Mottled (dominant) = 763/ (497+763) = 0.60

p=0.6

p2=0.36

genotypic frequency for homozygous dominant (p2)= 36%

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