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What is population geographic distribution?
It is the amount of population spread throughout an area.
How does a characteristic that contributes to few or no offspring not become more common as a result of evolution by natural selection?
The question answers itself: the characteristic is passed onto few or no offspring, and therefore will not spread throughout the population.
How is cultural evolution similar to natural selection?
Cultural evolution is the phenomenon whereby cultural ideas, notions, views, etc. propagate throughout populations, like alleles propagate throughout population gene pools in biological evolution.Some propose that the way these ideas propagate throughout populations is similar to the ways of biological evolution, in that cultural ideas (or memes) are subject to a kind of cultural selection, that determines how fast they spread, and to what degree.
What is a non example of contagious diffusion?
any characteristic that hasn't spread throughout a population
What is a population's geographic distribution?
A population's geographic distribution refers to how individuals within that population are spread out across a particular area or region. It can be influenced by factors such as habitat availability, resources, migration patterns, and human activities. Studying geographic distribution can provide insights into population dynamics, species interactions, and conservation efforts.
How does the process of purifying vs positive selection impact the selection of traits in a population?
The process of purifying selection removes harmful traits from a population, while positive selection promotes the spread of beneficial traits. Purifying selection reduces genetic variation by eliminating harmful mutations, leading to a more uniform population. Positive selection, on the other hand, increases genetic diversity by favoring advantageous traits, which can lead to the evolution of new characteristics in a population.
What is the difference between positive selection and purifying selection in the process of natural selection?
Positive selection refers to the process in which advantageous traits are favored and passed on to future generations, leading to an increase in their frequency in a population. Purifying selection, on the other hand, eliminates harmful or deleterious traits from a population, reducing their frequency over time. In essence, positive selection promotes the spread of beneficial traits, while purifying selection removes harmful traits from a population.
Why is the population of south America not spread evenly throughout the continent?
Because there are different parts of South America.
How does natural selection favor an organism's heritable trait?
Natural selection favors a trait by increasing its frequency in a population. Natural selection is differential reproductive success. If one variant of a trait enables an organism to have and raise more offspring successfully than other variants in a particualr environment, then it will become more common in the population.
What is a genetic drift and when does it occur?
Genetic drift is the spread of specific random variations throughout the gene pool in the absence of specific selection pressures. There's always random variation in the population, but there aren't always changes in the environment for the population to adapt to. So natural selection, in stead of moving the population towards adaptation, might select from that random variation to move 'sideways', as it were, to a state that's equally well-adapted to the environment as what came before, but different. As random variation may produce many variants that are, more or less, equally well-adapted to their environment, the direction of evolution that results is more or less random. Because variations may spread throughout small populations faster than throughout large populations, and because a large gene pool has a stabilizing effect on the spread of variations, small populations drift faster than large populations.
Why do benedicial adaptations spread in a population?
Beneficial adaptations spread in a population through natural selection, as individuals with these adaptations have a higher chance of surviving and reproducing. Over time, these advantageous traits become more prevalent within the population as they are passed down to future generations.
The paleo Indians spread throughout America by what year?
in what year did the paleo Indians spread throughout America
