Suppose the human trait for hair type is controlled by a simple
dominant and recessive relationship at one locus. Curly hair, C, is
the dominant allele, and straight hair, c, is the recessive allele.
In a college genetics class, the professor takes a tally of
students who have curly hair and of students with straight hair. In
this class of 123 students, 98 have curly hair. Calculate the
frequency of the dominant allele, C, and the heterozygous genotype,
Cc. Express the frequencies in decimal form rounded to the nearest
thousandth. Assume the class is in Hardy–Weinberg equilibrium for
this trait.
frequency of C:
frequency of Cc: