Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 19, Problem 3VCQ
Figure 19.8 In recent years, factories have become cleaner, and less soot is released into the environment. What impact do you think this has had on the distribution of moth color in the population?
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Students have asked these similar questions
In light and dark forests,
What impact do you think the environment has in the peppered moth population's individual survival? How does genetic frequency change throughout time? What about the frequency of allelic variation?
If the process of natural selection continues, what color of the population of the beetle would you expect to see in the environment?
What would happen to the relative frequencies of moth colors if environmental laws curtailed pollution and the tree bark went back to the pre-industrial color?
Question 8 options:
The ratio of light to dark-colored moths would stay the same.
Eventually, there would be relatively more dark-colored moths.
Eventually there would be relatively more light-colored moths.
Chapter 19 Solutions
Biology 2e
Ch. 19 - Figure 19.2 In plants, violet flower color (V) is...Ch. 19 - Figure 19.4 Do you think genetic drift would...Ch. 19 - Figure 19.8 In recent years, factories have become...Ch. 19 - What is the difference between micro- and...Ch. 19 - Population genetics is the study of: how selective...Ch. 19 - Which of the following populations is not in...Ch. 19 - One of the original Amish colonies rose from a...Ch. 19 - When male lions reach sexual maturity, they leave...Ch. 19 - Which of the following evolutionary forces can...Ch. 19 - What is assortative mating? when individuals mate...
Ch. 19 - When closely related individuals mate with each...Ch. 19 - What is a cline? the slope of a mountain where a...Ch. 19 - Which type of selection results in greater genetic...Ch. 19 - When males and females of a population look or act...Ch. 19 - The good genes hypothesis is a theory that...Ch. 19 - Solve for the genetic structure of a population...Ch. 19 - Explain the Hardy-Weinberg principle of...Ch. 19 - Imagine you are trying to test whether a...Ch. 19 - Describe a situation in which a population would...Ch. 19 - Describe natural selection and give an example of...Ch. 19 - Explain what a cline is and provide examples.Ch. 19 - Give an example of a trait that may have evolved...Ch. 19 - List the ways in which evolution can affect...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Figure 10.7 Why was Dolly a Finn-Dorset and not a Scottish Blackface sheep?arrow_forwardFigure 11.7 Do you think genetic drift would happen more quickly on an island or on the mainland?arrow_forwardFigure 1.15 Example of error bars in a graph. This graph was adapted from the peacock butterfly research described in Section 1.5. The researchers recorded the number of times each butterfly flicked its wings in response to an attack by a bird. The squares represent average frequency of wing flicking for each sample set of butterflies. The error bars that extend above and below the dots indicate the range of valuesthe sampling error. Figure It Out: What was the fastest rate at which a butterfly with no spots or sound flicked its wings?arrow_forward
- A researcher studies two types of fly populations. Population A have stubby bristles which are both shorter and blunter than population B. This is because the flies are homozygous for a certain allele for the stubble gene which affects bristle length. These flies are ebony coloured with black bodies. This is because they are homozygous for a certain allele for the ebony gene that affects body colour. Population B have longer and tapered bristles than population A and are not stubbly in appearance. This is due to them being homozygous for a different allele for the gene that affects bristle length to population A. These flys are not ebony coloured and have brown bodies. This is due to them being homozygous for the gene that affects body colour. The researcher crosses parental flys (P1) from population A with those from population B and counts the number of offspring that have stubble and non-stubble bristles, and the number of offspring that are ebony-coloured and non-ebony-coloured…arrow_forwardA scientist conducted an experiment to study the effect of a pesticide on fruit flies. He kept 10 fruit flies in jar A containing no pesticide and 10 fruit flies in jar B containing pesticide. What is the independent variable?arrow_forwardIf 94% of a fruit fly population has red eyes, a dominant trait, what percentage of this population would you expect to be heterozygous for this trait? Show all your work.arrow_forward
- suppose a population with little variation is struck by a disease. explain why this population would have more difficulty surviving the disease than a population with lots of variationarrow_forwardIn the post-industrial forest (dark forest), how did the ratio of light colored moths to dark-colored moths change over time? Question 7 options: The ratio of light colored moths increased relative to the number of dark colored moths. There was no change in the ratio between light and dark-colored moths. The ratio of dark colored moths increased relative to the number of light colored moths.arrow_forwardA researcher is studying two fly populations. Population A have stubbly bristles that are shorter and blunter than population B and are ebony coloured with black bodies. This is because they are homozygous for a certain allele for the stubble gene which affects bristle length and homozygous for the ebony gene which affects body colour. Population B have longer tapered bristles than population A and are not stubbly in appearance. They are not ebony and have brown bodies. This is because they are homozygous for a different gene that affects bristle length to population A and are homozygous for the gene that affects body colour. Table 1: F1 ebony flies - 0 F1 non-ebony flies - 560 F1 stubble flies - 560 F1 non-stubble flies - 0 Draw two separate Punnett Squares to illustrate the P1 cross - one for the stubbly alleles and one for the ebony alleles showing the individual gametes of each parent and the combination in the resulting F1 offspring.arrow_forward
- Valyrians have alleles for gene A, controlling hair color. The dominant A (silver hair) and the recessive a (brown hair). In a population of 3600 individuals, 2000 have genotype AA, 1000 have genotype Aa, and 600 have genotype aa. a-What is the frequency of allele a?arrow_forwardImagine a population of crabs living on a white sandy beach. The crabs ONLY occur in two color - red and blue, each controlled by color genes. Over time, will the crab population shift toward white? Why or why not?arrow_forwardImagine a population of moths where wing color is determined by one gene with two alleles.arrow_forward
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