In a population of 1000 individuals, 180 have kinky hair, 360 have wavy hairy, and the rest have straight hair. Let us assume that hair type is governed by a pair of alleles, and there are two types of alleles, S (kinky) and s (straight), with the heterozygote condition being wavy. Compute for the allelic frequencies for hair type in the population. Albinism is a rare genetic condition, occurring in only one in every 17,000 to 22,000 individuals in the world (Campbell et al. 2003; Gronskov et al. 2007). a. What happens to an individual who is albino (aa) or who has very low or lacks melanin pigments in the hair, skin and eyes?
Evolutionary Genetics
Evolution is known as continuous changes that occur to adjust organisms in their changing environment over many generations. Various theories have been proposed to illustrate the origin of life and organic evolution. The most accepted one is the theory of natural selection by Charles Darwin. According to his postulate, organisms undergo a struggle for existence due to overproduction. To survive in nature, they acquire variations. The inheritable variations are selected by nature, and it leads to the survival of the fittest.
Phenotype Frequency
The majority of populations have a certain degree of variation in their genetic pools. Scientists can predict the genetic variation happening over time by measuring the amount of genetic variation in a population and these predictions assist them in gaining important insights into the processes that allow organisms to adapt to the environment or to develop into new species over generations. This process is referred to as the process of evolution.
Hardy Weinberg Equilibrium
The frequencies of allele and genotype were maintained constant from one generation to another due to the absence of other evolutionary forces. It is otherwise called the Hardy Weinberg principle the field of population genetics.
In a population of 1000 individuals, 180 have kinky hair, 360 have wavy hairy, and the rest have straight hair. Let us assume that hair type is governed by a pair of alleles, and there are two types of alleles, S (kinky) and s (straight), with the heterozygote condition being wavy. Compute for the allelic frequencies for hair type in the population. Albinism is a rare genetic condition, occurring in only one in every 17,000 to 22,000 individuals in the world (Campbell et al. 2003; Gronskov et al. 2007).
a. What happens to an individual who is albino (aa) or who has very low or lacks melanin pigments in the hair, skin and eyes?
b. Based on your answer in c, how would you explain the frequency of the a allele?
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