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
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 3, Problem 9PDQ
Which of Mendel’s postulates can only be demonstrated in crosses involving at least two pairs of traits? State the postulate.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Mendelian ratios are modified in crosses involving autotetraploids.Assume that one plant expresses the dominant trait greenseeds and is homozygous (WWWW). This plant is crossed to onewith white seeds that is also homozygous (wwww). If only onedominant allele is sufficient to produce green seeds, predict theF1 and F2 results of such a cross. Assume that synapsis betweenchromosome pairs is random during meiosis.
Diagram the P1 and F1 crosses, using Mendelian notation, to show the possible genotypes found in each generation. (Remember a diagram is just the cross itself, not the progeny).
Use a branch diagram to determine all the phenotypes and corresponding ratios that are expected to occur among the offspring of the following Mendelian cross; d d E e F f X D D e e Ff. Assume incomplete dominance for D, E and F. Hint: are phenotypes and genotypes the same or different in this case?
Chapter 3 Solutions
Concepts of Genetics (12th Edition)
Ch. 3 - Pigeons may exhibit a checkered or plain color...Ch. 3 - Considering the Mendelian traits round versus...Ch. 3 - Using the forked-line, or branch diagram, method,...Ch. 3 - In one of Mendels dihybrid crosses, he observed...Ch. 3 - The following pedigree is for myopia...Ch. 3 - If they seek genetic counseling, what issues would...Ch. 3 - If you were in Thomass position, would you want to...Ch. 3 - If Thomas tests positive for the HD allele, should...Ch. 3 - HOW DO WE KNOW? In this chapter, we focused on the...Ch. 3 - CONCEPT QUESTION Review the Chapter Concepts list...
Ch. 3 - Albinism in humans is inherited as a simple...Ch. 3 - Which of Mendels postulates are illustrated by the...Ch. 3 - Discuss how Mendels monohybrid results served as...Ch. 3 - What advantages were provided by Mendels choice of...Ch. 3 - Mendel crossed peas having round seeds and yellow...Ch. 3 - Based on the preceding cross, what is the...Ch. 3 - Which of Mendels postulates can only be...Ch. 3 - In a cross between a black and a white guinea pig,...Ch. 3 - What is the basis for homology among chromosomes?Ch. 3 - In Drosophila, gray body color is dominant to...Ch. 3 - How many different types of gametes can be formed...Ch. 3 - Mendel crossed peas having green seeds with peas...Ch. 3 - In a study of black guinea pigs and white guinea...Ch. 3 - Mendel crossed peas having round green seeds with...Ch. 3 - Prob. 17PDQCh. 3 - The following are F2 results of two of Mendels...Ch. 3 - In assessing data that fell into two phenotypic...Ch. 3 - Prob. 20PDQCh. 3 - Consider the following pedigree. Predict the mode...Ch. 3 - Draw all possible conclusions concerning the mode...Ch. 3 - For decades scientists have been perplexed by...Ch. 3 - A wrongful birth case was recently brought before...Ch. 3 - TaySachs disease (TSD) is an inborn error of...Ch. 3 - Datura stramonium (the Jimsonweed) expresses...Ch. 3 - The wild-type (normal) fruit fly, Drosophila...Ch. 3 - To assess Mendels law of segregation using...Ch. 3 - Albinism, caused by a mutational disruption in...Ch. 3 - (a) Assuming that Migaloos albinism is caused by a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
2. Why is it that the range of resting blood pressures of humans is best represented by a bell-shaped curve co...
Human Biology: Concepts and Current Issues (8th Edition)
Some people compare DNA to a blueprint stored in the office of a construction company. Explain how this analogy...
Biology: Concepts and Investigations
Match the people in column A to their contribution toward the advancement of microbiology, in column B. Column ...
Microbiology: An Introduction
Describe the role and impact of microbes on the earth.
Microbiology Fundamentals: A Clinical Approach - Standalone book
Nursing Student with Neuropathic Pain
Tamara Costa broke her right tibia and has undergone two separate surger...
Human Anatomy & Physiology (11th Edition)
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
- Complete the table below to determine the Non-Mendelian patterns ofinheritance involved in the formation of the given phenotype of the offspringproduced in a cross between a homozygous black fur rabbit and white fur rabbit.arrow_forwardIn a mendelian monohbrid cross which generation is always completely heterozygous?arrow_forwardin the the dihybrid cross of Mendel how many genotype and phenotype?arrow_forward
- In which type of cross(es) can we apply and demonstrate the law of segregation and law of independent assortment? Why can’t we apply the 2 Mendelian laws on monohybrid crosses? Explain briefly. How can one use a pedigree chart to hypothesize how a certain condition is transmitted? Can a pedigree chart show probability of occurrence more accurately than the Punnett square? Why or why not?arrow_forwardA dihybrid cross is performed between two heterozygous individuals (heterozygous for two traits). The resulting offspring had 62 individuals that were dominant for trait 1 and 2 (D/D), 7 individuals that were R/R, 21 individuals that were R/D, and 25 individuals that were D/R. Using Mendelian inheritance as the null hypothesis, use χ2 analysis to determine if the trait follows Mendelian inheritance. A. How many D/D phenotype offspring are expected? B. How many R/D phenotype offspring are expected? C. How many degrees of freedom are there? D. What is your calculated χ2 value? E. What is the critical value if using a probability of 0.05? F. Does the trait follow Mendelian inheritance?arrow_forwardUsing Mendelian symbols, our cross is PpYyRr × Ppyyrr. What fraction of offspring from this cross are predicted to exhibit the recessive phenotypes for at least two of the three characters?arrow_forward
- Perform two consecutive crosses similar to those of Mendel for the following individual plants. Plants with round seeds (RR) are crossing with plants with wrinkled seeds (rr). After the first cross, cross the offspring together to generate F2 offspring. What are the genotypic and phenotypic ration of F2?arrow_forwardPlease explain and give the name of the 3 Mendel's laws.arrow_forwardMendel describes subjecting each of the 34 varieties of peas he obtained to a two-year trial. During this time he let the plants self-fertilize and observed their offspring. What was he looking for, and what was the purpose of doing this two-year trial? Why did Mendel perform "reciprocal crosses"? Someone gives you a bag of yellow peas and you plant them in the Spring. Can you predict the color of the peas that will appear in the pods on the plants grown from these peas? Would your answer be different if you had received a bag of green peas? Explain what Mendel means when he writes that the 3:1 ratio observed in the first generation from the hybrids "resolves itself" into a ratio of 2:1:1arrow_forward
- Deduce the phenotypic proportions in the progeny of thefollowing crosses of autotetraploids in which the a+/a locus is very close to the centromere. (Assume that the fourhomologous chromosomes of any one type pair randomly two by two and that only one copy of the a+ allele isnecessary for the wild-type phenotype.)a. a+/a+/a/a × a/a/a /ab. a+/a/a /a × a/a/a/ac. a+/a/a /a × a+/a/a /ad. a+/a+/a /a × a+/a/a /aarrow_forwardWhich of the following statements are true regarding Mendel's observations of single factor crosses? All F2 offspring exhibit the dominant phenotype 3/4 of F1 offspring exhibit the dominant phenotype 3/4 of F2 offspring exhibit the dominant phenotype The segregation of alleles into the gametes of F1 offspring determines the ratio of phenotypes observed in the F2. The independent assortment of alleles into the gametes of F1 offspring determines the ratio of phenotypes observed in the F2. All F1 offspring exhibit the dominant phenotypearrow_forwardWhich of the following statements is true about the molecular basis of Mendel's second law? OThe random attachment of the sister chromatids and the split of them into different daughter cells during the second round of cell division in Meiosis ensure Mendel's second law of independent assortment of alleles. OThe random attachment of the sister chromatids and the split of them into different daughter cells during the first round of cell division in Meiosis ensure Mendel's 2nd law. O The molecular basis of independent assortment of alleles is the segregation of sister chromatids during the second round of cell division in Meiosis. O The molecular basis of independent assortment of alleles is the segregation of homologous chromosomes during the second round of cell division in Meiosis. O The molecular basis of independent assortment of alleles is the segregation of homologous chromosomes during the first round of cell division in Meiosis.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning