What type of inheritance is shown by this pedigree?
Asked by dhruvbaptu02
5th September 2021,
1:29 PM
Answered by Expert
Answer:
1st generation - Male is affected in this pedigree while female is normal.
2nd generation – Male and female both are normal.
3rd generation – One male is affected while the other male is normal. Both the females are normal.
The given pedigree shows X-linked inheirtance.
An X-linked trait is carried on the X chromosome. In pedigrees depicting X-linked inheritance, usually only males are affected and, although affected males may occur in consecutive generations, transmission is always through females. This is based on the fact that males have a single X chromosome (in addition to their Y chromosome), which they always inherit from their mother and will always pass on to their daughters but never to their sons. Females, on the other hand, have two X chromosomes. Therefore, they can be carriers of an X-linked mutation, but in most cases are phenotypically unaffected because they have a second (nonmutated) X chromosome, compensating for whatever loss of function is caused by the mutated gene.
Answered by Expert
6th September 2021,
11:50 AM
Rate this answer
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
You have rated this answer /10
Your answer has been posted successfully!
RELATED STUDY RESOURCES :
Browse free questions and answers by Chapters
- 1 Biomolecules
- 2 Cell : The Unit of Life
- 3 Respiration in Plants
- 4 Animal Kingdom
- 5 Evolution
- 6 Ecosystem
- 7 The Living World
- 8 Biological Classification
- 9 Reproduction in Organisms
- 10 Sexual Reproduction in Flowering Plants
- 11 Human Reproduction
- 12 Reproductive Health
- 13 Principles of Inheritance and Variation
- 14 Molecular Basis of Inheritance
- 15 Biotechnology : Principles and Processes
- 16 Biotechnology and its Applications
- 17 Human Health and Disease
- 18 Microbes in Human Welfare
- 19 Strategies for Enhancement in Food Production
- 20 Organisms and Populations
- 21 Biodiversity and Conservation
- 22 Environmental Issues
- 23 Plant Kingdom
- 24 Morphology of Flowering Plants
- 25 Anatomy of Flowering Plants
- 26 Structural Organisation in Animals
- 27 Cell Cycle and Cell Division
- 28 Mineral Nutrition
- 29 Photosynthesis in Higher Plants
- 30 Plant Growth and Development
- 31 Digestion and Absorption
- 32 Breathing and Exchange of Gases
- 33 Body Fluids and Circulation
- 34 Excretory Products and their Elimination
- 35 Locomotion and Movement
- 36 Neural Control and Coordination
- 37 Chemical Coordination and Integration
- 38 Transport in Plants
Trending Tags
Latest Questions
JEE Main Mathematics
Asked by amaladelsingh
28th October 2020,
10:24 PM
CBSE X Biology
Asked by reenacharan2008
28th October 2020,
9:11 PM
