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
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2, Problem 27P
The following table shows the results of different matings between jimsonweed plants that had either purple or white flowers and spiny or smooth pods. Determine the dominant allele for the two traits and indicate the genotypes of the parents for each of the crosses.
| Parents | Offspring | |||
| Purple Spiny | White Spiny | Purple Smooth | White Smooth | |
| a. purple spiny X purple spiny | 94 | 32 | 28 | 11 |
| b. purple spiny X purple smooth | 40 | 0 | 38 | 0 |
| c. purple spiny X white spiny | 34 | 30 | 0 | 0 |
| d. purple spiny X white spiny | 89 | 92 | 31 | 27 |
| e. purple smooth X purple smooth | 0 | 0 | 36 | 11 |
| f. white spiny X white spiny | 0 | 45 | 0 | 16 |
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In mung beans, the green seed coat (G) is dominant than the brown seed coat (g). If a purebred mung bean which has a green seed coat was cross pollinated to a heterozygous one, what is the ratio of its genotype?
A) 1:2:1
B) 1:1:1:1
C) 2:2
D) 2:1
In mung beans, the green seed coat (G) is dominant than the brown seed coat (g). If a purebred mung bean which has a green seed coat was cross pollinated to a heterozygous one, what is the ratio of its genotype? Explain.
A) 2:2
B) 1:2:1
C) 1:1:1:1
D) 2:1
Using the following information perform following crosses using the forked line and predict all possible phenotypes types of the offspring. List the number and description of the phenotypes of the offspring. 1. aa BB Cc Dd Ee X aa bb Cc Dd EE 2. Ff Rr Gg dd Bb X Ff RR Gg Dd Bb 3. Dd gg JJ bb Hh Ee X DD GG Jj Bb Hh Ee
Chapter 2 Solutions
Genetics: From Genes to Genomes
Ch. 2 - For each of the terms in the left column, choose...Ch. 2 - During the millennia in which selective breeding...Ch. 2 - Describe the characteristics of the garden pea...Ch. 2 - An albino corn snake is crossed with a...Ch. 2 - Two short-haired cats mate and produce six...Ch. 2 - Piebald spotting is a condition found in humans in...Ch. 2 - As a Drosophila research geneticist, you keep...Ch. 2 - A mutant cucumber plant has flowers that fail to...Ch. 2 - In a particular population of mice, certain...Ch. 2 - In humans, a dimple in the chin is a dominant...
Ch. 2 - Some inbred strains of the weedy plant Arabidopsis...Ch. 2 - Among Native Americans, two types of earwax...Ch. 2 - Imagine you have just purchased a black stallion...Ch. 2 - If you roll a die singular of dice, what is the...Ch. 2 - In a standard deck of playing cards, four suits...Ch. 2 - How many genetically different eggs could be...Ch. 2 - What is the probability of producing a child that...Ch. 2 - A mouse sperm of genotype a B C D E fertilizes an...Ch. 2 - Your friend is pregnant with triplets. She thinks...Ch. 2 - Galactosemia is a recessive human disease that is...Ch. 2 - Albinism is a condition in which pigmentation is...Ch. 2 - A cross between two pea plants, both of which grew...Ch. 2 - A third-grader decided to breed guinea pigs for...Ch. 2 - The self-fertilization of an pea plant produced...Ch. 2 - The achoo syndrome sneezing in response to bright...Ch. 2 - A pea plant from a pure-breeding strain that is...Ch. 2 - The following table shows the results of different...Ch. 2 - A pea plant heterozygous for plant height, pod...Ch. 2 - In the fruit fly Drosophila melanogaster, the...Ch. 2 - Based on the information you discovered in the...Ch. 2 - Considering the yellow and green pea color...Ch. 2 - What would have been the outcome the genotypic and...Ch. 2 - Recall that Mendel obtained pure-breeding with...Ch. 2 - The gene that likely controlled flower color...Ch. 2 - For each of the following human pedigrees,...Ch. 2 - Consider the pedigree that follows for cutis laxa,...Ch. 2 - A young couple went to see a genetic counselor...Ch. 2 - Huntington disease is a rare fatal, degenerative...Ch. 2 - Is the disease shown in the following pedigree...Ch. 2 - Figure 2.22 shows the inheritance of Huntington...Ch. 2 - Consider the cystic fibrosis pedigree in Figure...Ch. 2 - Prob. 42PCh. 2 - People with nail-patella syndrome have poorly...Ch. 2 - Midphalangeal hair hair on top of the middle...Ch. 2 - A man with Huntington disease he is heterozygous...Ch. 2 - Explain why disease alleles for cystic fibrosis CF...Ch. 2 - The following pedigree shows the inheritance of...
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
- Use the image to observe the results of a cross between a tall pea plant and a short pea plant. What phenotypes and proportions will be produced for the two crosses? P generation Tall Tt Gametes Tt F₁ generation T Fertilization Tt t Tall tt Short Tt Tall tt tt Short Conclusion (a) Short (b) Genotypic ratio 1Tt:1tt Phenotypic ratio 1 tall: 1 short Tall F₁ progeny backcrossed to the short parent Answer Bank one-fourth tall and three-fourths short one-half tall and one-half short three-fourths tall and one-fourth short Tall F₁ progeny backcrossed to the tall parent all tall all shorarrow_forwardA tall pea plant (homozygous dominant) is crossed to a pea plant that is heterozygous for the gene for height. Create a Punnett Square and use it to answer the following questions: What is the genotypic ratio of the offspring? What is the phenotypic ratio of the offspring? Answers are written as genotype; phenotype a) 50% TT : 50% Tt; 100% tall plants b) 1 TT : 2 Tt : 1tt; 75% tall plants : 25% dwarf plants c) 1 TT : 2 Tt : 1tt; 25% tall plants : 50% medium height plants : 25% dwarf plantsarrow_forwardIn sweet pea plants, the trait for purple flowers (P) is dominant to the trait for red flowers (p).Similarly, the trait for long pollen (L) is dominant to the trait for round pollen (l).Two heterozygotes are crossed, yielding the following frequencies for the F1 generation:293 purple long plants;19 purple, round plants ;28 red, long plants ;87 red, round plantsUse the chi-square test to determine if these results are due to independent assortment. detailed explanation ?arrow_forward
- In snapdragon plants, red is incompletely dominant over white flowers and produced a hybrid pink. 1. What is the probability of having pink flowers when pink snapdragon and white snapdragon are crossed? A. 0% B. 25% C. 50% D. 75% E. 100% 2. What is the probability of having white flowers when two pink snapdragon are crossed? A. 0% B. 25% C. 50% D. 75% E. 100% 3. What is the probability of having pink flowers when two pink snapdragon are crossed? A. 0% B. 25% C. 50% D. 75% E. 100% PLEASE ANSWER ALL OF THEM BECAUSE THEY ARE CONNECTED :)arrow_forwardIn snapdragon plants, red is incompletely dominant over white flowers and produced a hybrid pink. 1. What is the probability of having red flowers when red snapdragon and white snapdragon are crossed? A. 0% B/ 25% C. 50% D. 75% E. 100% 2., What is the probability of having pink flowers when pink snapdragon and white snapdragon are crossed? A. 0% B. 25% C. 50% D. 75% E. 100% 3. What is the probability of having white flowers when two pink snapdragon are crossed? A. 0% B. 25% C. 50% D. 75% E. 100% 4. What is the probability of having pink flowers when two pink snapdragon are crossed? A. 0% B. 25% C. 50% D. 75% E. 100%arrow_forwardThe shape of radishes may be long, round, or oval. The following results were obtained in the different possible crosses: A. Long x oval gave 1/2 long 1/2 oval B. Oval x round gave 1/2 oval and 1/2 round. C. Long x round gave all oval. D oval x oval gave 1/4 long, 1/2 oval, and 1/4 round.  Explain these results. Hints: Show genotypes of each cross A. B. C. D.arrow_forward
- Hibiscus plants have different varieties of flowers. In an instance, both the red and white flowers showed that they are incompletely dominant with each other. If the flowers that were produced in the Hibiscus experiment was cross bred with each other, what is the ratio of their genotype? Explain. A) 1:3 B) 1:1:1:1 C) 1:2:1 D) 2:2arrow_forwardConsidering the Mendelian traits tall (D) versus dwarf (d) and violet (W) versus white (w), consider the crosses below and determine the genotypes of the parental plants by analyzing the phenotypes of the offspring. Parental Plants Offspring tall, violet x tall, white 3/8 tall, white 3/8 tall, violet 1/8 dwarf, violet 1/8 dwarf, white Select the one best answer. DDWW x DDww DdWw x Ddww DDWW x Ddww DDWw x DdWw DdWw x ddWwarrow_forwardA tall pea plant with purple flowers (both determined by dominant alleles) is crossed with a short plant with white flowers. there is no linkage of genes. if the tall, purple-flowered plant is heterozygous for both traits, the offspring will be: A 1 purple tall:1 white short B 3 purple tall:1 white short C 9 purple tall:3 purple short:3 white tall:1 white short D 1 purple tall:1 purple short:1 white tall:1 white shortarrow_forward
- Please read the scenario below and answer the question (in bold) that follows: An aquatic arthropod called a Cyclops has antennae that are either barbed (B) or smooth (b). In the same organism, non-resistance to pesticides (P) is dominant over resistance to pesticides (p). If a Cyclops that has smooth antennae and is resistant to pesticides is crossed with one that is heterozygous for both traits… Imagine, for a moment, that two organisms in the F1 generation are crossed. What is the probability that the offspring that are produced (i.e., the F2 generation) will have smooth antennae and be resistant to pesticides? a. 0% b. 25% c. 50% d. 75% e. It is impossible to tell given the information provided 2. What is the probability that offspring in the F1 generation will be Bb or bb and be resistant to pesticides? a. 0% b. 25% c. 50% d. 75% e. 100%arrow_forwardTall tomato plants are produced by the action of a dominant D allele and dwarf plants by its allele. recessive d. The hair shaft is produced by a dominant H gene and the hairless shaft by its recessive allele h.A test cross was applied to a dihybrid plant and the following results were obtained;b. High-hairy 125c. High non-hairy 115d. Hairy dwarfs 117e. Non-hairy dwarfs 123 a. Diagram the cross indicating the genotype of each parent.b. What are the expected phenotypic proportions showing their absolute frequency?c. Do these loci segregate independently?d. Because?arrow_forwardIn four o’clock, Mirabilis jalapa, it was found out that the allele W for red flowers is incompletely dominant over that for white, the heterozygous being pink. What are the phenotypes if a cross between these parents will yield:a. 27 red, 48 pink, 24 white flowered plants________ x_______ b. 18 red and 15 pink flowered plants ________ x________ c. 32 pink and 29 white flowered plants ________ x_______arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
How to solve genetics probability problems; Author: Shomu's Biology;https://www.youtube.com/watch?v=R0yjfb1ooUs;License: Standard YouTube License, CC-BY
Beyond Mendelian Genetics: Complex Patterns of Inheritance; Author: Professor Dave Explains;https://www.youtube.com/watch?v=-EmvmBuK-B8;License: Standard YouTube License, CC-BY