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What is the meaning of under population?
lacking the normal/average or required population density
What is phenotype frequency?
A ratio of individuals with a particular phenotype to the total number of individuals in the population. Individuals with certain phenotype --------------------------------------------------- (Over) Total # of individuals within the population The distribution of traits in a population
What is the number of individuals in a population called?
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.
Average number of individuals of the same species per unit of surface area at a given time is the?
population density
Why might average sized spider be favored in a given environment?
Average-sized spiders might be favored in a given environment because of their combination of size and speed.
Which of he following would cause gene flow?
Individuals moving into a population
What does a random distribution of individuals in a population most likely result from?
A random distribution of individuals in a population typically results from factors such as random mating, random dispersal, and random environmental conditions. This can lead to a lack of distinct patterns or clustering in the distribution of individuals within a given area.
Federalists favored ratification of the Constitution because they?
Federalists favored the ratification of the Constitution because they believed that a strong central government was needed. The federalists were generally wealthy individuals, that were opposed to anarchy.
What is the main way which new individuals are added to a population?
The main way individuals are added to the population (with animals) is the birth of new offspring.
When can you estimate a population's size when counting individuals in a sample of the population?
You can estimate a population's size when counting individuals if the density in a sample is greater than the population density.
How would selection against heterozygous individuals over many generations affect the frequencies of homozygous individuals?
If heterozygous individuals are not favored, then the frequency of heterozygous individuals will decrease as the frequency of homozygous individuals increase. This can be shown using the Hardy-Weinberg equation for allele frequencies in a population: p2 + 2pq + q2 = 1 where q2 & p2 are the frequencies of the two different homozygous individuals (eg. aa and AA) and 2pq is heterzygous (eg. Aa). As the equation shows, if 2pq decreases, the other two variables must increase to compensate.
How does natural selection create a change in population over time?
By favoring one variation of organism over another variation in the same population. These favored individuals ( natural selection selects individual organisms ) leave more descendants, with these traits, who over time become more numerous in the population and the populations allele frequency changes to reflect this. In a word, evolution.
