Study Guide for Campbell Biology
Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 14, Problem 1IQ

Fill in the following diagram of a cross of round-seeded and wrinkled-seeded pea plants. The round allele (R) is dominant; the wrinkled allele (r) is recessive.

Chapter 14, Problem 1IQ, Fill in the following diagram of a cross of round-seeded and wrinkled-seeded pea plants. The round

Expert Solution & Answer
Check Mark
Summary Introduction

To label: The given diagram that shows a cross between round-seeded and wrinkled-seeded pea plants.

Introduction: Gregor Johann Mendel who is known as the “Father of modern genetics” was the first person to conduct experiments on seven characters of pea plant. Based on these experiments, he framed three laws of inheritance, namely “Law of dominance, “Law of segregation”, and “Law of independent assortment.”

Answer to Problem 1IQ

Pictorial representation: Fig.1 represents a cross between round-seeded and wrinkled-seeded pea plants.

Study Guide for Campbell Biology, Chapter 14, Problem 1IQ

Fig.1: A cross between round seeded and wrinkled-seeded pea plants

Explanation of Solution

The description of cross between the round-seeded and wrinkled-seeded pea plants from parental generation till F2 generation is given below:

  • The parental generation includes the phenotypes that are round seeds and wrinkled seeds and their genetic makeup includes RR and rr, respectively.
  • The gametes of the round and wrinkled seeds are R and r, respectively.
  • These gametes fertilize to produce only round seeds in the F1 generation. This is because their genetic makeup is Rr and the allele for round seeds R is dominant over the wrinkled seeds r.
  • The F1 round-seeded plants whose genotype is Rr segregate into R and r at the time of gamete formation and fuse together to give rise to F2 generation.
  • The F2 generation gives rise to plants with different genotypes that are RR, Rr, and rr giving rise to both round and wrinkled seeds.
  • The plants with round and wrinkled seeds are produced in the ratio 3 rounded:1 wrinkled seed plants, whereas their genetic makeup are found in the ratio 1RR: 2Rr: 1rr.
Conclusion

The ratios of a cross between round versus wrinkled seeds are as follows:

Phenotypic ratio of round versus wrinkled seeds is 3:1

Genotypic ratio of  RR: Rr: rr is 1:2:1.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
In Figure 5-15, how are each of the following genotypesproduced?a. F+ a− c. F− a+b. F− a− d. F+ a+
. In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants.  What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring?
Figure 8.10 In pea plants, purple flowers (P) are dominant to white (p), and yellow peas (Y) are dominant to green (y). What are the possible genotypes and phenotypes for a cross between PpYY and ppYy pea plants? How many squares would you need to complete a Punnett square analysis of this cross?

Chapter 14 Solutions

Study Guide for Campbell Biology

Ch. 14 - Prob. 1SYKCh. 14 - How many different types of gametes can be formed...Ch. 14 - Prob. 3SYKCh. 14 - _______ gene Description a. has no effect on...Ch. 14 - _________ allele Description a. has no effect on...Ch. 14 - Prob. 3TYKMCh. 14 - Prob. 4TYKMCh. 14 - __________ dominant allele Description a. has no...Ch. 14 - __________ recessive allele Description a. has no...Ch. 14 - __________ genotype Description a. has no effect...Ch. 14 - Prob. 8TYKMCh. 14 - Prob. 9TYKMCh. 14 - Prob. 10TYKMCh. 14 - Prob. 11TYKMCh. 14 - Prob. 12TYKMCh. 14 - According to Mendels law of segregation, a. there...Ch. 14 - The F2 generation a. has a phenotypic ratio of...Ch. 14 - A 1:1 phenotypic ratio in a testcross indicates...Ch. 14 - Which phase of meiosis is most directly related to...Ch. 14 - After obtaining two heads from two tosses of a...Ch. 14 - The probability of tossing three coins...Ch. 14 - The probability of tossing three coins...Ch. 14 - In the F2 of a dihybrid cross involving two...Ch. 14 - In guinea pigs, the brown coat color allele (B) is...Ch. 14 - A true-breeding dwarf corn plant with red ears is...Ch. 14 - Prob. 11TYKCh. 14 - Prob. 12TYKCh. 14 - Prob. 13TYKCh. 14 - In humans, earwax can be wet or dry. The form of...Ch. 14 - You have blood type B, your mother has blood type...Ch. 14 - Prob. 16TYKCh. 14 - Summer squash are either white or yellow. To get...Ch. 14 - Prob. 2GPCh. 14 - True-breeding tall red-flowered plants are crossed...Ch. 14 - Prob. 4GPCh. 14 - Prob. 5GPCh. 14 - Prob. 6GPCh. 14 - Prob. 7GPCh. 14 - Prob. 8GPCh. 14 - Prob. 9GPCh. 14 - Fur color in rabbits is determined by a single...Ch. 14 - Prob. 11GPCh. 14 - The ability to taste phenylthiocarbamide (PTC) is...Ch. 14 - Prob. 13GPCh. 14 - Prob. 14GPCh. 14 - Prob. 15GPCh. 14 - Prob. 16GPCh. 14 - Imagine that a newly discovered, recessively...Ch. 14 - In mice, black fur (B) is dominant to white (b)....
Knowledge Booster
Background pattern image
Biology
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
SEE MORE QUESTIONS
Recommended textbooks for you
  • Text book image
    Concepts of Biology
    Biology
    ISBN:9781938168116
    Author:Samantha Fowler, Rebecca Roush, James Wise
    Publisher:OpenStax College
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
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