
Concept explainers
Pigeons may exhibit a checkered or plain color pattern. In a series of controlled matings, the following data were obtained.
Then ⊢1 offspring were selectively mated with the following results. (The P1 cross giving rise to each ⊢1 pigeon is indicated in parentheses.)
How are the checkered and plain patterns inherited? Select and assign symbols for the genes involved, and determine the genotypes of the parents and offspring in each cross.

To determine: The pattern of inheritance of checkered and plain pattern.
Introduction: Pattern of inheritance is defined as the pattern by which a particular trait or gene is transferred to the offspring and what are the conditions that is needed for its expression. There are five different types of pattern of inheritance namely X-linked dominant, X-linked recessive, autosomal recessive, autosomal dominant and mitochondrial inheritance.
Explanation of Solution
In the cross between checked and plain pattern shows a autosomal dominance inheritance in which checkered trait is a dominant trait and plain pattern is a recessive trait. This can be concluded because in a cross between checkered and plain pattern parents give all heterozygous offspring and since checkered trait being a dominant trait is expressed in all heterozygous progeny.
The inheritance pattern of offspring produced by crossing checkered and plain pattern parents is autosomal dominance inheritance.

To determine: The pattern of inheritance of checkered and plain pattern.
Introduction: Mendel gave three important postulates by observing the monohybrid crosses and Law of dominance is one of the three laws given by Mendel. According to this law a dominant trait expresses itself in both homozygous condition as well as heterozygous condition. On the contrary, the recessive trait is able to express only in homozygous condition.
Answer to Problem 1NST
Pictorial representation: Fig.1 cross showing the F1 and F2 progeny formed after crossing between checkered and plain pigeons.
Fig.1: Crosses show the F1 and F2 progeny formed after crossing between checkered and plain pigeons.
Explanation of Solution
The dominant trait responsible for checkered pattern is represented by “A” and the recessive trait responsible for plain pattern is represented by “a”.
In the F2 cross when the F1 progeny is crossed with each other the cross between checkered (a) and plain gave 34 checkered and no plain progeny. When the checkered b progeny is crossed with the plain progeny 17 checkered and 14 plain progeny were formed. When checkered (b) is crossed with itself, 28 checkered and 9 non checkered progeny were formed and when checkered (a) and checkered (b) are crossed 39 checkered offspring’s were formed.
Want to see more full solutions like this?
Chapter 3 Solutions
EBK CONCEPTS OF GENETICS
Additional Science Textbook Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Human Anatomy & Physiology (2nd Edition)
Campbell Biology (11th Edition)
Organic Chemistry (8th Edition)
Human Physiology: An Integrated Approach (8th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
- 12. Calculate the area of a circle which has a radius of 1200 μm. Give your answer in mm² in scientific notation with the correct number of significant figures.arrow_forwardDescribe the image quality of the B.megaterium at 1000X before adding oil? What does adding oil do to the quality of the image?arrow_forwardWhich of the follwowing cells from this lab do you expect to have a nucleus and why or why not? Ceratium, Bacillus megaterium and Cheek epithelial cells?arrow_forward
- 14. If you determine there to be debris on your ocular lens, explain what is the best way to clean it off without damaging the lens?arrow_forward11. Write a simple formula for converting mm to μm when the number of mm's is known. Use the variable X to represent the number of mm's in your formula.arrow_forward13. When a smear containing cells is dried, the cells shrink due to the loss of water. What technique could you use to visualize and measure living cells without heat-fixing them? Hint: you did this technique in part I.arrow_forward
- 10. Write a simple formula for converting μm to mm when the number of μm's are known. Use the variable X to represent the number of um's in your formula.arrow_forward8. How many μm² is in one cm²; express the result in scientific notation. Show your calculations. 1 cm = 10 mm; 1 mm = 1000 μmarrow_forwardFind the dental formula and enter it in the following format: I3/3 C1/1 P4/4 M2/3 = 42 (this is not the correct number, just the correct format) Please be aware: the upper jaw is intact (all teeth are present). The bottom jaw/mandible is not intact. The front teeth should include 6 total rectangular teeth (3 on each side) and 2 total large triangular teeth (1 on each side).arrow_forward
- Answer iarrow_forwardAnswerarrow_forwardcalculate the questions showing the solution including variables,unit and equations all the questiosn below using the data a) B1, b) B2, c) hybrid rate constant (1) d) hybrid rate constant (2) e) t1/2,dist f) t1/2,elim g) k10 h) k12 i) k21 j) initial concentration (C0) k) central compartment volume (V1) l) steady-state volume (Vss) m) clearance (CL) AUC (0→10 min) using trapezoidal rule n) AUC (20→30 min) using trapezoidal rule o) AUCtail (AUC360→∞) p) total AUC (using short cut method) q) volume from AUC (VAUC)arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning




