Genetics: From Genes to Genomes
6th Edition
ISBN: 9781259700903
Author: Leland Hartwell Dr., Michael L. Goldberg Professor Dr., Janice Fischer, Leroy Hood Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 22, Problem 3P
How can each of the following be used in determining the role of genetic and/or environmental factors in
| a. | genetic clones |
| b. | human monozygotic versus dizygotic twins |
| c. | cross-fostering |
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The following table shows the number of dogs for certain tail lengths in a population of dogs.
Tail Length
Number of Dogs
very short (less than 1 inch)
2
short (1–5 inches)
5
medium (5–10 inches)
15
long (10–15 inches)
5
very long (15–25 inches)
2
Based on this data, what type of trait is tail length in dogs?
(a) Mendelian
(b) codominant
(c)
(d) polygenic
How do geneticists detect the presence of genetic variation as different alleles in a population?
What evolutionary factors can cause allele frequencies to change and possibly lead to a genetic polymorphism? Discuss the relative importance of each type of process.
Chapter 22 Solutions
Genetics: From Genes to Genomes
Ch. 22 - Choose the best matching phrase in the right...Ch. 22 - Suppose you grew genetically identical dandelion...Ch. 22 - How can each of the following be used in...Ch. 22 - Two different groups of scientists studying a rare...Ch. 22 - Which of the following statements would be true of...Ch. 22 - Studies have indicated that for pairs of twins...Ch. 22 - Prob. 7PCh. 22 - Prob. 8PCh. 22 - Table 22.2 lists concordance values for MZ and DZ...Ch. 22 - Prob. 10P
Ch. 22 - Prob. 11PCh. 22 - Two alleles at one locus produce three distinct...Ch. 22 - In a certain plant, leaf size is determined by...Ch. 22 - Compare and contrast the use of SNP genotyping: i...Ch. 22 - Explain the similarities and differences between...Ch. 22 - In Fig. 22.14c, the fw2.2 causal gene was...Ch. 22 - Among the most prevalent pathologies that afflict...Ch. 22 - Human geneticists have found the Finnish...Ch. 22 - Canavan disease, caused by homozygosity for a...Ch. 22 - In GWAS analysis, because of the existence of LD...Ch. 22 - In Fig. 22.15: a. Why do some chromosomes in the...Ch. 22 - Consider the triangle diagram shown in Fig. 22.17....Ch. 22 - Prob. 23PCh. 22 - You conduct a Case/Control study comparing the...Ch. 22 - Prob. 25PCh. 22 - ALS amyotrophic lateral sclerosis is a rare, fatal...Ch. 22 - Through GWAS explorations, scientists have...Ch. 22 - In domesticated dogs, size has a high...Ch. 22 - Suppose a GWAS investigation found a particular LD...Ch. 22 - In 2008, Time magazine named as its invention of...
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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
- The following table shows the number of dogs for certain tail lengths in a population of dogs. Based on this data, what type of trait is tail length in dogs? polygenic Mendelian pleiotropic codominantarrow_forwardApplying the Hardy-Weinberg equilibrium. 81% of the individuals are homozygous for a recessive allele. What percentage of the individuals would be expected to be heterozygous for this locus in the next generation?arrow_forwardUsing the pedigree shown here, answer the following questions for individual VI-1. A. Is this individual inbred? B. If so, who is/are her parents’ common ancestor(s)? C. Calculate the inbreeding coefficient for VI-1. D. Are the parents of VI-1 inbred?arrow_forward
- In instances of true dominance-recessiveness, why are the homozygous recessive organisms valuable for investigating genetics?arrow_forwardFrom the pedigree shown here, answer the following questions with regard to individual VII-1. A. Who are the common ancestors of her parents? B. What is the inbreeding coefficient for this individual?arrow_forwardYou are examining a population of snakes in which 20% of the individuals exhibit the recessive phenotype for albinism. If albinism is exhibited only by the genotype aa, how many snakes out of a population of 100 would you expect to CARRY the albinism allele (so be Aa), but be normal color?arrow_forward
- For a gene existing in two alleles, what are the allele frequencies when the heterozygote frequency is at its maximum value, assuming Hardy-Weinberg equilibrium? What if there are three alleles?arrow_forwardWhat is the frequency of the heterozygous genotype if the homozygous genotype frequencies are 0.1385 (BB) and 0.5897 (bb)?arrow_forwardThe diagram below represents results of agarose gel electrophoresis performed after PCR amplification of a molecular marker in diploid organisms. Answer the following questions: a) How many individuals are homozygous and how many are heterozygous? b) How many alleles are there in this population?arrow_forward
- What is the main difference between a homologous trait and an analogous trait?arrow_forwardIn a population of beans that is mostly diploid, there are an assortment of them: black, white, orange, red, green, fuchsia, brown, yellow. Determine the number of alleles that can be observed in the bean population?arrow_forwardHow do scientists evaluate distributions of phenotypes to estimate the heritability of a complex trait—that is, the contributions of genes (as opposed to the environment) to the phenotypic differences observed in a particular population?arrow_forward
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