Business
Engineering
Math
Science
Social Science
The probability of a crossover occurring between two genes on the same chromosome ________. a. is unrelated to the distance between them b. decreases with increasing distance between them c. Increases with the distance between them
Biology: The Unity and Diversity o...
Solutions
Biology: The Unity and Diversity o...
The probability of a crossover occurring between two genes on the same chromosome ________.
- a. is unrelated to the distance between them
- b. decreases with increasing distance between them
- c. Increases with the distance between them
Concept introduction: Crossing over occurs between the homologous chromosomes during which the genes are exchanged. Crossing over occurs during the meiosis I. Crossing over helps to eliminate lethal alleles or occurrence of the homozygous recessive alleles that cause disorders. Chiasma is the point of physical contact that occurs between two homologous chromosomes during the crossing over.
Explanation of Solution
Reason for the correct answer:
For genes to undergo the cross over the thumb rule is that there must be enough distance between their loci, then the genes can be exchanged between the homologous chromosomes. Adjacent genes cannot undergo the cross over as the chiasma cannot form between the adjacent genes of the homologous chromosome. If two genes are far off, the chiasma can form between them and thus cross over can take place. If genes have a large distance between them the chiasma formation is easy to occur.
Option c. is given as “increases with the distance between them” and since a minimum distance is required between the genes for chiasma to form and greater the distance and the easier it is to form the chiasma, the correct answer is option c...
Chapter 13 Solutions
Additional Science Textbook Solutions
Biology (MindTap Course List)
Introductory Chemistry: A Foundation
General Chemistry - Standalone book (MindTap Course List)
Fundamentals of Physical Geography
Understanding Nutrition (MindTap Course List)
Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)
College Physics
Inquiry into Physics
Chemistry: An Atoms First Approach
College Physics
Chemistry In Focus
Chemistry & Chemical Reactivity
Human Biology (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Human Heredity: Principles and Issues (MindTap Course List)
Nutrition Through The Life Cycle
Introduction to General, Organic and Biochemistry
An Introduction to Physical Science
Chemistry for Engineering Students
Horizons: Exploring the Universe (MindTap Course List)
Cardiopulmonary Anatomy & Physiology
Chemistry In Focus
Chemistry for Today: General, Organic, and Biochemistry
Physical Chemistry
Chemistry for Engineering Students
Chemistry: Principles and Reactions
Environmental Science (MindTap Course List)
Nutrition Through the Life Cycle (MindTap Course List)
General, Organic, and Biological Chemistry
College Physics
Organic Chemistry
Physics for Scientists and Engineers
Environmental Science (MindTap Course List)
Organic And Biological Chemistry
Chemistry & Chemical Reactivity
Physics for Scientists and Engineers: Foundations and Connections
Physics for Scientists and Engineers with Modern Physics
Foundations of Astronomy (MindTap Course List)
Oceanography: An Invitation To Marine Science, Loose-leaf Versin
Physics for Scientists and Engineers, Technology Update (No access codes included)
Introductory Chemistry: An Active Learning Approach
