Patterns Of Inheritance, Anatomy and Physiology Phenotypic Characters to Children
There are five basic modes of inheritance for single-gene diseases: autosomal dominant, autosomal recessive, X-linked dominant, X-linked recessive, and mitochondrial. Read the article to know more.
Nivedita Dar5 Aug, 2024
Share
Genes are the blueprint of our bodies. The nucleus contains this information in the form of genes, which are specific patterns of nitrogenous bases coding for particular sequences of amino acids. These sequences help form specific proteins, and the expression of these genes leads to different phenotypic features in the progeny.
Inheritance follows a specific pattern determined by a set of rules called Mendel’s Laws of Inheritance, formulated by Gregor John Mendel in the 19th century. These laws are universal and generally followed, with some exceptions. Each variation of a gene is called an allele . The two copies of a gene contained in your chromosomes influence how your cells work. The two alleles in a gene pair are inherited, one from each parent. Alleles interact with each other in different ways, known as inheritance patterns. There are four main types of inheritance patterns: autosomal dominant, autosomal recessive, X-linked dominant, X-linked recessive, and mitochondrial inheritance. There are two types of chromosomes:- Sex chromosomes, which determine male or female sex
- Autosomes, which are all the other chromosomes (chromosome pairs 1 through 22)
Patterns Of Inheritance FAQs
In snapdragons flowers, why crossing a red flower with a white flower results in a pink flower?
Because it’s an example of incomplete dominance, phenotype is a blend of two alleles.
What is epigenetic inheritance?
Epigenetic inheritance involves changes in gene expression that do not alter the DNA sequence but are passed to offspring. Epigenetic modifications can include DNA methylation and histone modification.
What is the peculiar inheritance pattern in X linked dominant inheritance?
An affected male will pass the dominant allele to all of his daughters (who will be affected) but to none of his sons. An affected female has a 50% chance of passing the dominant allele to each of her children, regardless of their sex.
What is the peculiar inheritance pattern in X linked recessive inheritance?
An affected male will pass the recessive allele to all of his daughters (making them carriers), but not to any of his sons. A carrier female has a 50% chance of passing the affected allele to each of her sons (who will be affected) and a 50% chance to each of her daughters (who will be carriers).
Talk to a counsellorHave doubts? Our support team will be happy to assist you!
Check out these Related Articles
Join 15 Million students on the app today!
Live & recorded classes available at easeDashboard for progress trackingMillions of practice questions at your fingertips
Free Learning Resources
PW Books
Notes (Class 10-12)
PW Study Materials
Notes (Class 6-9)
Ncert Solutions
Govt Exams
Class 6th to 12th Online Courses
Govt Job Exams Courses
UPSC Coaching
Defence Exam Coaching
Gate Exam Coaching
Other Exams
Know about Physics Wallah
Physics Wallah is an Indian edtech platform that provides accessible & comprehensive learning experiences to students from Class 6th to postgraduate level. We also provide extensive NCERT solutions, sample paper, NEET, JEE Mains, BITSAT previous year papers & more such resources to students. Physics Wallah also caters to over 3.5 million registered students and over 78 lakh+ Youtube subscribers with 4.8 rating on its app.
We Stand Out because
We provide students with intensive courses with India’s qualified & experienced faculties & mentors. PW strives to make the learning experience comprehensive and accessible for students of all sections of society. We believe in empowering every single student who couldn't dream of a good career in engineering and medical field earlier.
Our Key Focus Areas
Physics Wallah's main focus is to make the learning experience as economical as possible for all students. With our affordable courses like Lakshya, Udaan and Arjuna and many others, we have been able to provide a platform for lakhs of aspirants. From providing Chemistry, Maths, Physics formula to giving e-books of eminent authors like RD Sharma, RS Aggarwal and Lakhmir Singh, PW focuses on every single student's need for preparation.
What Makes Us Different
Physics Wallah strives to develop a comprehensive pedagogical structure for students, where they get a state-of-the-art learning experience with study material and resources. Apart from catering students preparing for JEE Mains and NEET, PW also provides study material for each state board like Uttar Pradesh, Bihar, and others
Copyright © 2025 Physicswallah Limited All rights reserved.