There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than environmental, if these traits involve dominant and recessive alleles, and if the four (4%) represent the frequency of the homozygous recessive condition, please calculate the following: A) The frequency of the recessive allele. B) The frequency of the dominant allele. C) The frequency of heterozygous individuals.
Question 3.
There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and
received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than
environmental, if these traits involve dominant and recessive alleles, and if the four (4%) represent
the frequency of the homozygous recessive condition, please calculate the following:
A) The frequency of the recessive allele.
B) The frequency of the dominant allele.
C) The frequency of heterozygous individuals.
Question 4
Within a population of butterflies, the colour brown (B) is dominant over the colour white (b). And,
40% of all butterflies are white. Given this simple information, which is something that is very likely
to be on an exam, calculate the following:
A) The percentage of butterflies in the population that are heterozygous.
B) The frequency of homozygous dominant individuals.
Question 5
A rather large population of organisms have 396 red-sided individuals and 557 tan-sided
individuals. Assume that red is totally recessive. Please calculate the following:
a) The allele frequencies of each allele
b) The expected genotype frequencies.
c) The number of heterozygous individuals that you would predict to be in this population.
d) The expected
e) Conditions happen to be really good this year for breeding and next year there are 1,245
offspring. Assuming that all of the Hardy-Weinberg conditions are met, how many of these
would you expect to be red-sided and how many tan-sided?
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