Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 28.3, Problem 1COMQ
For many quantitative traits, genotypes and
a. the trait changes over time.
b. the trait is polygenic.
c. environmental variation affects the trait.
d. both b and c are true.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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
A gene for a particular trait that is expressed when two copies (homozygous) or just one copy of the same allele are present (heterozygous), is called a(n):
A. Dominant trait.
B. Codominant trait.
C. Incompletely dominant trait.
D. Recessive trait.
E. Multiple allele.
Which of the following is false?
a.
The color of a fruit fly's eyes is a trait.
b.
The instructions for producing a trait are found in a gene that controls the physical expression of that trait.
c.
A gene can have different alleles that can specify different traits, such as red or brown eye color.
d.
The trait is influenced by the gene, independent of the environment.
e.
By studying the patterns of traits over generations of an organism, the genetic composition of an organism can be deduced.
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...
Knowledge Booster
Learn more about
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
- Heritability of a biological trait is best defined as which of the following? a. The proportion of variation in a trait that is specifically due to genes. b. The proportion of variation in a trait that is due to the environment and genes c. The proportion of variation in a trait that is only due to dominant additive genetic variance. d. The proportion of variation in a trait due to developmental effects.arrow_forward.A) To determine if a human trait is heritable, we would best study Group of answer choices. I think it's A. Please explain your answer I'm trying to understand the material a. monozygotic twins that were raised separately, in different environments. b. monozygotic twins that have been raised under similar conditions. c.only distantly related individuals. d. all males or all females. B). To say that a trait exhibits “high heritability” is to say that a. a given set of genes has no influence on a trait. b. there is no difference in genotype between members of the population at the loci in question. c. in a given environment and population, genetic differences have a high degree of influence on the trait compared to environmental influences. d. there is no difference in character between two individuals with the same genotype in question. C). If two populations with identical genetic makeup are raised in different environments, the narrow-sense heritability of a trait of…arrow_forwardA trait exhibits 100% concordance for both monozygotic and dizygotic twins. What conclusion can you draw about the role of genetic factors in determining differences in the trait? a. Genetic factors are extremely important.b. Genetic factors are somewhat important.c. Genetic factors are unimportant.d. Both genetic and environmental factors are important.arrow_forward
- Which of the following does not describe a gene? A. A gene is the observable characteristics or traits B. All are correct C. Agene is a stretch of DNA that produces one or more genetic traits D. A gene is the basic unit of genetic information for a specific traitarrow_forwardWhich of the following is the definition of the term named Allele? a.Refers to genes that have identical alleles b.Genetic constitution of an organism c.Alternative form of a gene d.Trait expressed in the F1 generation e.Fundamental physical and functional unit of heredity f.Physical expression of traits of an organismarrow_forwardAll of the following are considered a quantitative trait, EXCEPT? a. A trait that has a continuously varying phenotype in the population. b. A trait that is influenced by both genetic and environmental factors. c. A trait that has multiple genes that contribute to the phenotype. d. A trait that is influenced by one gene that follows complete dominance inheritance patterns.arrow_forward
- . Which of the following terms applies to traits, such as human eye color, that are controlled by more than one gene? A. Codominant B. Polygenic C. Recessive D. Sex-linkedarrow_forwardWhich of the following is false? a. the pollen grain shape was studied by Mendel. b. Mendel believed that the characteristics of pea plants were determined by the inheritance units or factors from both parents. c. An allele is one of several possible forms of a gene. d. When the genotype consists of a dominant and recessive allele, the phenotype will be like the dominant allele.arrow_forwardIn a hypothetical population, matings involving two individuals heterozygous for the phenylketonuria allele on chromosome 12 result in 10% of the offspring showing the effects of the disease. This percentage arises because: A. the trait has pleiotropic effect B. the trait assorts independently C. the trait has low expressivity D. the trait has only partial penetrance E. the trait is sex-influencedarrow_forward
- When a disease is due to polygenic inheritance, the following is probably true: A. Many factors, both genetic and environmental, contribute to the disease traits. B. It is caused by one gene with a large number of alleles. C. It affects a large number of people. D. It has many different symptomsarrow_forwardThe difference between dominant and recessive traits is … Group of answer choices: A.genes for dominant traits are passed on preferentially. B.effects of recessive traits can be hidden by effects of dominant traits. C.recessive traits are deleterious (bad for the organism) and dominant traits are not. D.dominant genes produce proteins, recessive genes do not. E.dominant traits are more likely to be expressed in males.arrow_forwardWhich of the following is the definition of the term named Dominant trait? a.Refers to genes that have identical alleles b.Genetic constitution of an organism c.Alternative form of a gene d.Trait expressed in the F1 generation e.Fundamental physical and functional unit of heredity f.Physical expression of traits of an organismarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Genetic Variation and Mutation | 9-1 GCSE Science Biology | OCR, AQA, Edexcel; Author: SnapRevise;https://www.youtube.com/watch?v=bLP8udGGfHU;License: Standard YouTube License, CC-BY