The phenomenon of pleiotropism refers to
- Presence of two alleles, each of the two genes controlling a single trait
- A single gene affecting multiple phenotypic expression
- More than two genes affecting a single character
- Presence of several alleles of a single gene controlling a single crossover
The Correct Option is B
Solution and Explanation
In pleiotropy, a single gene has multiple effects on the phenotype, leading to the expression of multiple traits or characteristics. These different traits may seemingly be unrelated to each other, and they arise from the influence of the same gene on various biochemical pathways or developmental processes within the organism. Pleiotropy is a common occurrence in genetics and can result in diverse phenotypic effects caused by alterations in a single gene.
Therefore, The correct option is (B): A single gene affecting multiple phenotypic expression
Top Questions on Principles of Inheritance and Variation
- In a family, the father, the daughter, and the son are colour blind, whereas the mother has normal vision. Do you think the son and daughter have inherited the disease from their father? Work out a cross to justify your answer.
- CBSE CLASS XII - 2024
- Biology
- Principles of Inheritance and Variation
- If there were 100 rose plants in a garden last year. 20 new rose plants are added through reproduction in current year. the birth rate of rose is ____ offspring per rose per year.
- CUET (UG) - 2023
- Biology
- Principles of Inheritance and Variation
- If a pink flowered snapdhagon plant is crossed with a white flowered snapdragan plant. What will be the phenotype of their progen ?
- CUET (UG) - 2023
- Biology
- Principles of Inheritance and Variation
Which of the following statements are correct about Klinefelter’s Syndrome?
A. This disorder was first described by Langdon Down (1866).
B. Such an individual has overall masculine development. However, the feminine development is also expressed.
C. The affected individual is short statured.
D. Physical, psychomotor and metal development is retarded. E. Such individuals are sterile.Choose the correct answer from the options given below:
- NEET (UG) - 2023
- Biology
- Principles of Inheritance and Variation
- Which one of the following symbols represents mating between relatives in human pedigree analysis?
- NEET (UG) - 2023
- Biology
- Principles of Inheritance and Variation
Questions Asked in NEET exam
- Match List I with List IIChoose the correct answer from the options given below:
List I List II A Down’s syndrome I 11th chormosome B α-Thalassemia II ‘X’ chromosome C β-Thalassemia III 21st chromosome D Klinefelter’s syndrome IV 16th chromosome - NEET (UG) - 2024
- Genetic Disorders
The velocity (v) - time (t) plot of the motion of a body is shown below :
The acceleration (a) - time(t) graph that best suits this motion is :- NEET (UG) - 2024
- speed and velocity
- An iron bar of length L has magnetic moment M. It is bent at the middle of its length such that the two arms make an angle 60° with each other. The magnetic moment of this new magnet is :
- NEET (UG) - 2024
- Magnetic Field
- A tightly wound \(100\) turns coil of radius \(10 cm\) carries a current of \( 7 A\). The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as \(4\pi×10^{-7}\) SI units):
- NEET (UG) - 2024
- Magnetic Field
- Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below- NEET (UG) - 2024
- Cell structure and organelles