I a) What type of selection might be occurring here? I b) Choose a graph that represents the kind of selection that is occurring here and explain in words why you choose this graph (Solid line is the original population, dotted line is the population after selection): ba каки A в с c)To what degree would the trait have on Schnauzer's fitness if it is at risk of cancer only in old age?
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.
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#3
Cancer s caused by a mutation in the regulatory parts of the cell, this causes cells to replicate out of
control. In some cases, the likeliness of getting cancer is a heritable trait. Assume this trait varies from
highly likely to have cancer to not likely to have cancer. For a population of Schnauzers (a type of dog),
skin cancer more prevalent in old age, long after most of the breed has had offspring.
I
a) What type of selection might be occurring here? |
b) Choose a graph that represents the kind of selection that is occurring here and explain in words why
you choose this graph (Solid line is the original population, dotted line is the population after selection):
ba
но и и
WI
A
B
c)To what degree would the trait have on Schnauzer's fitness if it is at risk of cancer only in old age?
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