Correct answer is stabilizing selection.
What is an example of the founder effect?
For example, the Amish populations in the United States exhibit founder effects because they have grown from a very few founders, have not recruited newcomers, and tend to marry within the community.
What is meant by founder effect?
The founder effect is the reduction in genetic variation that results when a small subset of a large population is used to establish a new colony. The new population may be very different from the original population, both in terms of its genotypes and phenotypes.
What is an example of the bottleneck effect?
The bottleneck effect is an extreme example of genetic drift that happens when the size of a population is severely reduced. Events like natural disasters (earthquakes, floods, fires) can decimate a population, killing most individuals and leaving behind a small, random assortment of survivors.
What types of individuals in a population are represented by the two ends of a bell curve?
Answer Expert Verified. The types of individuals in a population that are represented by the two ends of a bell curve are those with an extreme variation of a specific trait. The bell curve is a normal distribution. However, two ends of the bell curve belong to individuals with an extreme variation of the trait.
What are the two main sources of genetic variation?
Natural selection acts upon two major sources of genetic variation: mutations and recombination of genes through sexual reproduction.
What is founder effect explain and give two examples?
Genetic Diseases in Humans Small populations of humans are either forcibly separated, or leave the larger genetic pool by choice. An example of the founder effect in this context is the higher incidence of fumarase deficiency in a population of members of a fundamentalist church.
Which of the following is the best example of the bottleneck effect?
The drought lake is the best example of the Bottleneck effect because the event was random and the survivors lived due to random chance. A small number of the fish reestablished their population in the lake, their genetic diversity was also reduced.
What is founder principle?
Founder principle, in genetics, the principle whereby a daughter population or migrant population may differ in genetic composition from its parent population because the founders of the daughter population were not a representative sample of the parent population. See also genetic drift.
Why is the bottleneck effect bad?
Biological invaders do suffer one obvious disadvantage, namely that at the beginning of the invasion their numbers are low. Such so-called population bottlenecks mean that the invader populations can go extinct quite easily, and that, compared with larger native populations, their genetic variability will be lower.
When do individuals at one end of a curve have higher fitness?
directional selection when individuals at one end of the curve have higher fitness than individuals in the middle or at the other end stabilizing selections when individuals near the center of the curve have higher fitness than individuals at either end of the curve
Where does equilibrium occur on the demand curve?
The original equilibrium (E 0) in each market occurs at the intersection of the demand curve (D 0) and supply curve (S 0 ). When aggregate demand declines, the demand for labor shifts to the left (to D 1) in Figure 1 (a) and the demand for goods shifts to the left (to D 1) in Figure 1 (b).
How does the center of gravity affect your body?
Artwork: As long as your center of gravity (yellow star) remains roughly above the midpoint between your feet, you stay upright even during complex movements like walking and dancing. But if you move the top of your body too much in one direction, you’ll create a turning force (green) that will tend to make you rotate.
Which is the peak of the bell curve?
For example, most humans have average intelligence (the peak of the bell curve), while geniuses (the far right slope of the bell curve) and those with very low intelligence (far left) are rare. You have to push through hordes of 6-foot-tall adult men before you find any 4-footers or 8-footers – again a bell-curve distribution.
