The average IQ level of individuals in a population where 100 IQ is considered the norm is also 100.
The individuals with extreme variations of a trait.
lacking the normal/average or required population density
In stabilizing selection, the average phenotype is favored, leading to a reduction in extreme phenotypes. In directional selection, one extreme phenotype is favored, causing a shift in the average towards that extreme. In disruptive selection, both extreme phenotypes are favored over the average, leading to a bimodal distribution in the population.
The average bicep width measurement for individuals in a healthy population varies, but it is typically around 13-15 inches for adult males and 11-13 inches for adult females.
population density
Average-sized spiders might be favored in a given environment because of their combination of size and speed.
One method not favored by eugenics was promoting immigration restrictions based on racial or ethnic criteria. While eugenics proponents often advocated for sterilization and marriage restrictions to prevent the reproduction of individuals deemed "unfit," they generally did not support policies that encouraged diverse population growth through immigration. Instead, their focus was on controlling the existing population rather than promoting inclusivity.
A population pattern is shown on a map where people live, such as dense areas within the population. Other patterns could be specific themes, such as average income of the population.
The genetic variation that was favored by natural selection led to the increased frequency of the advantageous trait in a population over time, resulting in adaptation to the environment. This can lead to improved survival and reproductive success for individuals carrying the advantageous variation.
The number of individuals in the population is the population's size. If a population is small enough you will be able to determine the size by counting the individuals.
A population with a normal distribution of heights will have many individuals clustered around the average height, with fewer individuals at the extremes (very short or very tall). This results in a bell-shaped curve, where the majority of people fall within one standard deviation of the mean. As you move away from the average, the number of individuals decreases, reflecting the characteristics of a normal distribution.