Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 25, Problem 3PDQ
Define the following: (a) polygenic, (b) additive alleles, (c) correlation, (d) monozygotic and dizygotic twins, (e) heritability, (f) QTL, and (g) continuous variation.
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Students have asked these similar questions
Which of the following is used to identify the chromosomal region(s) associated with
a continuous trait?
a) Narrow-sense heritability
b) Twin studies
O c) Correlation coefficient
O d) QTL mapping
Which of the following choices accurately describe what makes one person different from another with regard to traits (such as height) that have a very high heritability?
Choose all that apply
a) What makes us different is not that we have different genes, but that we have different alleles of many of those genes
b) What makes us different from each other is that we have different genes from each other
c) Random factors during development is the most significant causes of differences between people
d) Most of us have exactly the same genes and alleles, and it’s the environment we were raised in that makes us different
e) None of the other choices are accurate
which is not true according to mendel's law of segregation?
A) one factor must be dominant and one factor recessive in each individualB)fertilization restores the presence of two factorsC)each gamete contains one copy of each factor.D)each individual contains two factors for each trait
Chapter 25 Solutions
Concepts of Genetics (12th Edition)
Ch. 25 - A homozygous plant with 20-cm-diameter flowers is...Ch. 25 - The following table shows measurements for fiber...Ch. 25 - The following cable gives the percentage of twin...Ch. 25 - At an interview with a genetic counselor, a couple...Ch. 25 - Prob. 2CSCh. 25 - At an interview with a genetic counselor, a couple...Ch. 25 - HOW DO WE KNOW? In this chapter, we focused on a...Ch. 25 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 25 - Define the following: (a) polygenic, (b) additive...Ch. 25 - A dark-red strain and a white strain of wheat are...
Ch. 25 - Height in humans depends on the additive action of...Ch. 25 - An inbred strain of plants has a mean height of 24...Ch. 25 - Erma and Harvey were a compatible barnyard pair,...Ch. 25 - In the following table, average differences of...Ch. 25 - What kind of heritability estimates (broad sense...Ch. 25 - List as many human traits as you can that are...Ch. 25 - Corn plants from a test plot are measured, and the...Ch. 25 - The following variances were calculated for two...Ch. 25 - The mean and variance of plant height of two...Ch. 25 - Prob. 14PDQCh. 25 - Prob. 15PDQCh. 25 - In an assessment of learning in Drosophila, flies...Ch. 25 - Prob. 17PDQCh. 25 - Prob. 18PDQCh. 25 - In a population of 100 inbred, genotypically...Ch. 25 - Many traits of economic or medical significance...Ch. 25 - A 3-inch plant was crossed with a 15-inch plant,...Ch. 25 - In a cross between a strain of large guinea pigs...Ch. 25 - Type A1B brachydactyly (short middle phalanges) is...Ch. 25 - In a series of crosses between two true-breeding...Ch. 25 - Students in a genetics laboratory began an...Ch. 25 - Prob. 26ESPCh. 25 - Canine hip dysplasia is a quantitative trait that...Ch. 25 - Floral traits in plants often play key roles in...Ch. 25 - In 1988, Horst Wilkens investigated blind...
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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
- Which of the following is not a phenotypic description of allele interactions affecting the expression of traits? A) incomplete dominance B) codominance C) polymorphic D) multifactorial E) pleiotrophicarrow_forwardUsing pedigree diagrams, calculate the inbreedingcoefficient (F ) for the offspring of (a) parent–offspringmatings; (b) first-cousin matings; (c) aunt–nephewor uncle–niece matings; (d) self-fertilization of ahermaphrodite.arrow_forward(C) 1/2 1/2 (D) 1/2 (E) 1/2 x 1/2 25. A couple has 5 children, all sons. If the woman gives birth to a sixth child, what is the probability that the sixth child will be a son? (A) 5/6 (В) 1/2 (C) 1/5 (D) 1/6 (E) 1/64 26. In sheep, eye color is controlled by a single gene with two alleles. When a homozygous brown-eyed sheep is crossed with a homozygous green-eyed sheep, blue-eyed offspring are produced. If the blue-cyed sheep are mated with each other, what percent of their offspring will most likely have brown eyes? (А) 0% (B) 25% (C) 50% (D) 75% (E) 100% 27. In peas the trait for tall plants is dominant (T) and the trait for short plants is recessive (t). The trait for yellow seed color is dominant (Y) and the trait for green seed color is recessive (y). A cross between two plants results in 296 tall yellow plants and 104 tall green plants. Which of the following are most likely to be the genotypes of the parents? (А) TTYҮ х TTҮҮ (В) Ттуу х ТТYу (C) TIYY x TIYy (D) TIYy x TTYY (E)…arrow_forward
- Given that the normal hemoglobin allele (H) is dominant to the sickle-cell allele (h), each time two Hh individuals have a child together, what is the chance that the child will have sickle-cell disease? (a) 0% (b) 75% (c) 25% (d) 50% (e) 100%arrow_forward1) Explain briefly what an; i) Allele II) Lethal genes III) Sex links IV) Sex limited and sex influence traits 2) Explain the component of phenotypic and genotypic variances.arrow_forwardPlease define the following terms: 1.) Homozygous2.) Heterozygous3.) Genotype4.) Phenotype5.) Allelearrow_forward
- Which of the following can help explain how continuous variation in a trait can arise from underlying discrete Mendelian genetics (i.e. individual loci at which there are alleles with discrete effects on the phenotype)? O a) Co-dominance b) Meiotic drive c) Blending inheritance d) Multiple loci and the environment can affect expression of a trait e) The germ plasm theoryarrow_forwardWhich of these definitions of heritability is most correct? a)The total amount of phenotypic variation in a population. b) The total amount of genetic variation in a population. c) The proportion of phenotypic variation in a population that is due to genetic factors. d) The proportion of phenotypic variation in a population that is due to environmental factors.arrow_forwardwhich is not true according to mendel's law of segregation? A) one factor must be dominant and one factor recessive in each individualB)fertilization restores the presence of two factorsC)each gamete contains one copy of each factor.D)each individual contains two factors for each traitE) ferilization restores the presence of two factorsarrow_forward
- Consider the following human traits: Eye color: brown (B) is dominant over blue (b)Fingers: polydactylous (P) or extra fingers is dominant over normal (p) fingersHairline: widows peak (W) is dominant of normal (w) hairline A man with the genotype BBPpWW marries a woman with the genotype bbPpWw.What is the probability that they will have a: a. Baby boy? b. Child with blue eyes? c. Child with normal fingers? d. Child with widow’s peak?e. Baby girl with blue eyes? f. Baby boy with normal fingers?g. brown-eyed, polydactylous child?arrow_forwardIn plants, a trait has a narrow-sense heritability of 0.75. This indicates a) the trait is inherited from a parent 75% of the time. b) the proportion of phenotypic variance due to environmental variance. c) the degree of inbreeding from artificial selection. d) the proportion of variance due to additive alleles.arrow_forwardIn which of the following cases a person can be heterozygous for a particular trait , and expresses both alleles of that trait ? a) sex-linked inheritance c ) incomplete dominance d) recessive inheritancearrow_forward
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