Lab 5 - Quantative Inheritance - Student Atlas, Fall 2023

pdf

School

New York University *

*We aren’t endorsed by this school

Course

303

Subject

Biology

Date

Jan 9, 2024

Type

pdf

Pages

13

Uploaded by CountDuck3940

Report
Quantitative Inheritance Atlas Human Genetics Fall 2023 Name: Noor Maahin Lab Instructor: Mrunmayi More Section time/day: 7, Thursday 11:00 – 12:15
Population Split, Heritability: MEDIUM Initial Population Initial Spot Distribution Final Populations Final Spot Distributions Selected Population Selected Spot Distribution
High or Low Spot Number Population, Heritability: LOW Initial Population Initial Spot Distribution Final Populations Final Spot Distributions Selected Population Selected Spot Distribution
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
High or Low Spot Number Population, Heritability: MEDIUM Initial Population Initial Spot Distribution Final Populations Final Spot Distributions Selected Population Selected Spot Distribution
High or Low Spot Number Population, Heritability: HIGH Initial Population Initial Spot Distribution Final Populations Final Spot Distributions Selected Population Selected Spot Distribution
High and Low Spot Numbers (Bimodal) Population, Heritability: LOW Initial Population Initial Spot Distribution Final Populations Final Spot Distributions Selected Population Selected Spot Distribution
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
High and Low Spot Numbers (Bimodal) Population, Heritability: HIGH Initial Population Initial Spot Distribution Final Populations Final Spot Distributions Selected Population Selected Spot Distribution
UNKNOWN HERITABILITY Initial Population Initial Spot Distribution Final Populations Final Spot Distributions Selected Population Selected Spot Distribution
LAB QUESTIONS Question 1: The number of different phenotypes under this kind of additive model is 2n+1, where n is the number of loci. How many loci are required to make the 15 different phenotypes corresponding to 0–14 spots? - You need 7 loci to generate 15 different phenotypes from 0-14 spots in a simple additive model Question 2: Assume you know the value of h2. How would you calculate the fraction of phenotypic variation due to environment, VE/VP, in terms of h2? - You can calculate the fraction of phenotypic variation due to the environment (VE/VP) in terms of heritability (h²) using the equation: VE/VP = 1 - h²
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
LAB QUESTIONS Question 3: In one sentence, describe how heritability affects evolution of the mean phenotype in the selected population (Right Field) relative to the original population (Left Field). - The lower the heritability, the closer the selected population (right field) can get to the original population’s (left field) mean. Question 4: In one sentence, describe what happens to the distribution over a few generations if you start a population with ladybugs that have low and high numbers of spots but no bugs with a medium number of spots. - This will result in a higher concentration of ladybugs with a spot number close to the mean, compared to the original population
LAB QUESTIONS Question 5: Record your values of x 1 , x 2 and show how you calculated S. X 1 =9.16 x 2 = 6.97 S = x 2 - x 1 --> S= -2.19 Question 6: Show how you calculated R. R = Y 2 – x 2 = 7.28 – 9.16 = -1.88 Question 7: What is your estimated heritability? h 2 = R/S h 2 = (-1.88) /(- 2.19) h 2 = 0.86
LAB QUESTIONS Question 8: Draw conclusions about your experiment. For example: § Is your calculated value of h 2 high or low? § How much did the mean of the population change when you selected parents with extreme phenotypic values? Does this behavior match well with your selection tests using different known heritabilities? Why or why not? § Does the Breeder's Equation give a good prediction about how strongly selection will work on a particular quantitative trait? § Are there any questions you could propose to test in the future to increase our understanding of how heritability affects the strength of selection (or other aspects of quantitative inheritance explored here)? Continue Answer on Next Page…
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
LAB QUESTIONS 1. My calculated value of h 2 is high, as it is 0.86 2. The mean of a population changes significantly more when selecting parents with extreme phenotypic values. This behavior matches well with my selection tests using different phenotypic values because those values seemed to stay relatively the same. When looking comparatively at the extreme populations and the random populations, the random populations have means closer to the that of the original population as the phenotypes are relatively scattered. Though, extreme populations have higher means compared to the original mean because the phenotypes are more concentrated. 3. Yes, because the Breeder's Equation provides a valuable framework for understanding and predicting the response to selection for a quantitative trait, especially when applied to well-defined and controlled breeding programs. 4. A few questions we can ask: 1. How does the response to selection change across traits with varying heritabilities, and what is the relationship between heritability and the rate of response to selection? 2. How does population size, and its impact on genetic drift, affect the effectiveness of selection, especially for traits with low heritability?

Related Documents

Screen Shot 2023-12-17 at 1.59.03 PM.png
Screen Shot 2023-12-17 at 1.59.30 PM.png
Bonus_lab_MalekBleibel.docx
Practice questions - without answers (Topic 8-16).pdf
Lab 6 - Cracking the Genetic Code - Fall 2023.pdf
Hart_Assignment 4 (1).docx
FRSC 1011 _ Final Exam Study Notes.docx
BIO329_Ch16-ConceptQ-ver1.docx
BIO 115 Lab Manual Spring 2023.pdf
Arleen Echevarria- MOLECULAR AND CELLULAR BIOLOGY-C888.docx
Arleen Echevarria - MOLECULAR AND CELLULAR BIOLOGY - C888 (1) (1) (1).docx
Assessing the Ears Lecture Notes.docx
Recommended textbooks for you
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Anatomy & Physiology
Biology
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:OpenStax College
Text book image
Understanding Nutrition (MindTap Course List)
Health & Nutrition
ISBN:9781337392693
Author:Eleanor Noss Whitney, Sharon Rady Rolfes
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
SEE MORE TEXTBOOKS
Recommended textbooks for you
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Anatomy & Physiology
Biology
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:OpenStax College
Text book image
Understanding Nutrition (MindTap Course List)
Health & Nutrition
ISBN:9781337392693
Author:Eleanor Noss Whitney, Sharon Rady Rolfes
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
SEE MORE TEXTBOOKS