Question:

please help match these. got these wrong. thank you! Match the type of selection with its definition. stabilizing selection two

please help match these. got these wrong.
thank you!
Match the type of selection with its definition.
stabilizing selection
two or more extreme phenotv
directional selection
an intermediate phenotype is
disruptive selection
an extreme phenotype is fave
[Choose
an intermediate phenotype is favored by the environment
an extreme phenotype is favored by the environment
two or more extreme phenotypes are favored by the environment

please help match these. got these wrong. thank you! Match the type of selection with its definition. stabilizing selection two or more extreme phenotv directional selection an intermediate phenotype is disruptive selection an extreme phenotype is fave [Choose an intermediate phenotype is favored by the environment an extreme phenotype is favored by the environment two or more extreme phenotypes are favored by the environment

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Evolution: Natural Selection
1. How natural selection affects a population
1. Natural selections acts upon (circle one) genotypes I phenotypes.
TRUE OR FALSE. If you believe the following statement is True, write "T". If you believe it is False,
write "F".

Biology

Evolution Solutions

Evolution: Natural Selection 1. How natural selection affects a population 1. Natural selections acts upon (circle one) genotypes I phenotypes. TRUE OR FALSE. If you believe the following statement is True, write "T". If you believe it is False, write "F". 2. Competition is a factor of natural selection. 3. Genetic variation is a factor of natural selection. 4. Individuals among a population that are better adapted to their environment leave more offspring. II. Natural selection's effect on the population's gene pool The diagram at left represents a gene pool. Assume that each "X" represents a gene with 2 alleles. ttt Xt. X 7 X Xxxx 5. How many alleles are in the population sample at left? 6. How many of these alleles are dashed? 7. How often does the dashed allele occur? (Divide the number of times the dashed allele is present by the total number of alleles): (this is the allelic frequency for that particular allele). Suppose that a virus outbreak occurred within the population reflected above. The dashed allele codes for a protein that is present on the cell membrane. The viruses cannot attach to this particular protein, therefore the individuals with the dashed allele are more likely to survive the outbreak. Those that do not possess the allele are more likely to die. After the outbreak, all of those individuals that contain the dashed allele survived. Half of those that did not contain the dashed allele died off. 8. How does this change the population? 9. How is this an example of natural selection? 10. Defend the following statement using the virus outbreak that occurred in the population as an example: “Natural selection acts upon a population, not an individual" FOC Biology Review Biology Roots, LLC www.biology-roots.com