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se #1: The Story of the Peppered Moth reat Britain, prior to the 1800s, most peppered moths had wings that were white with black ks. In 1848, a new 'species' was spotted: a completely black moth! By the 1950s, one dred years later, more than 90% of moths were black. 1. What forces of evolution are at work? Tick all that apply. Mutation Natural Selection Genetic Drift Gene Flow Is natural selection involved? If it is, then how, specifically is it operating? Explain how the forces of evolution shift allele frequencies in the population over time. answer should include all of the 'forces' of evolution that you identified as being employed ve). Put this information into a narrative to explain how individuals are selected, and how es shift over time.

se #1: The Story of the Peppered Moth reat Britain, prior to the 1800s, most peppered moths had wings that were white with black ks. In 1848, a new 'species' was spotted: a completely black moth! By the 1950s, one dred years later, more than 90% of moths were black. 1. What forces of evolution are at work? Tick all that apply. Mutation Natural Selection Genetic Drift Gene Flow Is natural selection involved? If it is, then how, specifically is it operating? Explain how the forces of evolution shift allele frequencies in the population over time. answer should include all of the 'forces' of evolution that you identified as being employed ve). Put this information into a narrative to explain how individuals are selected, and how es shift over time.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Lab 4: Forces of Evolution** **Case #1: The Story of the Peppered Moth** In Great Britain, prior to the 1800s, most peppered moths had wings that were white with black specks. In 1848, a new ‘species’ was spotted: a completely black moth! By the 1950s, one hundred years later, more than 90% of moths were black. 1. **What forces of evolution are at work? Tick all that apply.** - [ ] Mutation - [ ] Natural Selection - [ ] Genetic Drift - [ ] Gene Flow 2. **Is natural selection involved? If it is, then how, specifically is it operating?** 3. **Explain how the forces of evolution shift allele frequencies in the population over time.** Your answer should include all of the ‘forces’ of evolution that you identified as being employed (above). Put this information into a narrative to explain how individuals are selected, and how alleles shift over time.
Transcribed Image Text:**Lab 4: Forces of Evolution** **Case #1: The Story of the Peppered Moth** In Great Britain, prior to the 1800s, most peppered moths had wings that were white with black specks. In 1848, a new ‘species’ was spotted: a completely black moth! By the 1950s, one hundred years later, more than 90% of moths were black. 1. **What forces of evolution are at work? Tick all that apply.** - [ ] Mutation - [ ] Natural Selection - [ ] Genetic Drift - [ ] Gene Flow 2. **Is natural selection involved? If it is, then how, specifically is it operating?** 3. **Explain how the forces of evolution shift allele frequencies in the population over time.** Your answer should include all of the ‘forces’ of evolution that you identified as being employed (above). Put this information into a narrative to explain how individuals are selected, and how alleles shift over time.
**Case #2: Sickle-Cell Anemia** As many as 20-30% of people living in equatorial Africa have at least one allele on Chromosome 11 that codes for sickle-cell anemia (they have an “S” rather than an “A” allele). This is odd because usually, 80% of people who have two S alleles die before they can reproduce - so why is the allele still around? 1. **What forces of evolution are at work? Tick all that apply.** ___ Mutation ___ Natural Selection ___ Genetic Drift ___ Gene Flow 2. **Is natural selection involved? If it is, then how, specifically is it operating?** 3. **Explain how the forces of evolution shift allele frequencies in the population over time.** Your answer should include all of the ‘forces’ of evolution that you identified as being employed (above). Put this information into a narrative to explain how new traits are introduced, how individuals are selected (if present), and how alleles in the population shift over time.
Transcribed Image Text:**Case #2: Sickle-Cell Anemia** As many as 20-30% of people living in equatorial Africa have at least one allele on Chromosome 11 that codes for sickle-cell anemia (they have an “S” rather than an “A” allele). This is odd because usually, 80% of people who have two S alleles die before they can reproduce - so why is the allele still around? 1. **What forces of evolution are at work? Tick all that apply.** ___ Mutation ___ Natural Selection ___ Genetic Drift ___ Gene Flow 2. **Is natural selection involved? If it is, then how, specifically is it operating?** 3. **Explain how the forces of evolution shift allele frequencies in the population over time.** Your answer should include all of the ‘forces’ of evolution that you identified as being employed (above). Put this information into a narrative to explain how new traits are introduced, how individuals are selected (if present), and how alleles in the population shift over time.
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