Total alleles:66
Total dominant:52
Total recessive:14
Frequency of dominant:0.787878...repeating
Frequency of recessive:0.21212121...repeating
The correct answer is: Heartburn often results when the gastroesophageal sphincter fails to close properly.
The gastroesophageal sphincter is a muscle located at the bottom of the esophagus that has to be relaxed in order to allow food to flow down into the stomach. After it contracts (tightens), the food and the stomach acid can’t flow back up into the esophagus.
When the gastroesophageal sphincter fails to close properly acid reflux occurs and causes the heartburn.
The answer is efferent
division. The nervous system acts as an input-output
system. The afferent nervous system conveys
signals to the brain following a stimulus. After processing of the information, the
brain sends out a signal in response. This response is carried by the efferent nerve to the requisite organ involved
in the response.
Answer: Genetic equilibrium is a situation where allele frequencies in a gene pool are not changing. In other words, the population is not evolving. The conditions to maintain the genetic equilibrium are no mutation, no gene flow, large population size, random mating, and no natural selection. The equilibrium can be disrupted by deviations from any of its five main underlying conditions.
An example of this in humans would be a heterozygote for brown eye color. The person would carry both a dominant brown allele “A” and a recessive blue allele “a” yet have brown eyes. The dominant brown allele masks the recessive blue allele. Genetic equilibrium is the state in which allele frequencies remain constant.
Observations are used with observing, forming a hypothesis, and analyzing data.
