Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 28.4, Problem 2COMQ
To map QTLs, strains are crossed that differ with regard to
a. a quantitative trait.
b. molecular markers.
c. a quantitative trait and molecular markers.
d. a quantitative trait and a discontinuous trait.
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Students have asked these similar questions
Which of the following can the results of a QTL tell you?
a.
Identify all of the causative genes underlying a trait.
b.
Identify the specific marker locus causes the phenotype you are tracking.
c.
Identification of regions of the genome that are associated with a trait.
d.
Identify haplotypes associated with specific traits of interest in other populations.
A. How does the linkage of traits impact selection decisions in a breeding plan?
B. How are molecular markers useful for making selection decisions in the face of linkage drag?
What is a quantitative trait locus (QTL)?
a.
A portion of the genome that is a particular quantitative length
b.
A portion of the genome in which polymorphic markers correlate with a phenotype
c.
A region of the genome where qualitative traits associate with discrete phenotypes
d.
A region of the genome that does not follow Mendelian inheritance patterns
Chapter 28 Solutions
Genetics: Analysis and Principles
Ch. 28.1 - 1. Which of the following is an example of a...Ch. 28.1 - 2. Saying that a quantitative trait follows a...Ch. 28.2 - The variance is a. a measure of the variation...Ch. 28.2 - 2. Which of the following statistics is used to...Ch. 28.3 - 1. For many quantitative traits, genotypes and...Ch. 28.4 - A QTL is a __________ where one or more genes...Ch. 28.4 - 2. To map QTLs, strains are crossed that differ...Ch. 28.5 - 1. In a population of squirrels in North Carolina,...Ch. 28.5 - Prob. 2COMQCh. 28.5 - 3. One way to estimate narrow-sense heritability...
Ch. 28.6 - 1. For selective breeding to be successful, the...Ch. 28.6 - Prob. 2COMQCh. 28 - Give several examples of quantitative traits.How...Ch. 28 - 2. At the molecular level, explain why...Ch. 28 - 3. What is a normal distribution? Discuss this...Ch. 28 - 4. Explain the difference between a continuous...Ch. 28 - What is a frequency distribution? Explain how such...Ch. 28 - 6. The variance for weight in a particular herd of...Ch. 28 - Two different varieties of potato plants produce...Ch. 28 - 8. If , would you conclude that a positive...Ch. 28 - Prob. 9CONQCh. 28 - When a correlation coefficient is statistically...Ch. 28 - 11. What is polygenic inheritance? Discuss the...Ch. 28 - What is a quantitative trait locus (QTL)? Does a...Ch. 28 - 13. Let’s suppose that weight in a species of...Ch. 28 - Prob. 14CONQCh. 28 - 15. From an agricultural point of view, discuss...Ch. 28 - Many beautiful varieties of roses have been...Ch. 28 - 17. In your own words, explain the meaning of the...Ch. 28 - 18. What is the difference between broad-sense...Ch. 28 - The heritability for egg weight in a group of...Ch. 28 - In a fairly large population of people living in a...Ch. 28 - When artificial selection is practiced over many...Ch. 28 - 22. Discuss whether a natural population of wolves...Ch. 28 - 23. With regard to heterosis, is each of...Ch. 28 - Here are data for height and weight among 10 male...Ch. 28 - 2. The abdomen length (in millimeters) was...Ch. 28 - 3. You conduct an RFLP analysis of head weight in...Ch. 28 - 5. Let’s suppose that two strains of pigs differ...Ch. 28 - Prob. 6EQCh. 28 - In a wild strain of tomato plants, the phenotypic...Ch. 28 - The average thorax length in aDrosophilapopulation...Ch. 28 - 9. In a strain of mice, the average 6-week body...Ch. 28 - Prob. 10EQCh. 28 - 11. A danger in computing heritability values from...Ch. 28 - For each of the following relationships,...Ch. 28 - An animal breeder had a herd of sheep with a mean...Ch. 28 - The trait of blood pressure in humans has a...Ch. 28 - Discuss why heritability is an important...Ch. 28 - From a biological viewpoint, speculate as to why...Ch. 28 - 3. What is heterosis? Discuss whether it is caused...
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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
- How might the Hardy Weinberg relationship be used to evaluate a new SNP genotyping technology using multiple individuals from a population? Group of answer choices a)If genotypes match the reference genome, the technology is sound. Otherwise, the technology may have problems accurately calling SNPs. b)If observed phenotypes follow Hardy Weinberg, the technology is sound. Otherwise, the technology may have problems accurately calling SNPs. c)If genotypes and allele frequencies follow Hardy Weinberg, the technology is sound. Otherwise, the technology may have problems accurately calling SNPs. d)None of the abovearrow_forwardWhat is the Strategy for genetic mapping of quantitative trait loci (QTLs) influencing complex traits?arrow_forwardWhat is a quantitative trait locus (QTL)? Does a QTL contain onegene or multiple genes? What technique is commonly used to identify QTLs?arrow_forward
- What is the importance of linkage mapping when it comes to tracking a disease or trait in families?arrow_forwardIn a Gwas study, why is it important to a.) Recruit thousands of people and b. Categorize participants according to traitarrow_forwardExplain the quantitative trait loci (QTLs)?arrow_forward
- Explain how quantitative trait loci are mapped on chromosomesusing molecular markers.arrow_forwardWhich of the following is the MOST important characteristic of a trait for it to undergo descent with modification? A. It must be heritable. B. It must exhibit variation. C. It must exhibit phenotypic plasticity. D. Variation in the trait must be accompanied by variation in fitness.arrow_forwardA) what are the genotypes for EB27 and EB67? B) what is the relationship between the three alleles (B,br, y)? Show evidence using the pedigreearrow_forward
- Compare and contrast qualitative versus quantitative traits and describe a continuousdistribution. List and explain the two factors that can generate quantitative traits andhow Mendelian genetics can explain them.arrow_forwardDefine about quantitative trait locus (QTL) ?arrow_forwardwhat does the data table in Griffith's experiment represents?What are the inferences from Griffith's table? What are type 1, 2 and 3. R and S strains?arrow_forward
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