Question:
“The influence of both the alleles in a heterozygous state is clearly expressed in codominance.” Explain with the help of inheritance of ABO blood group in humans.
“The influence of both the alleles in a heterozygous state is clearly expressed in codominance.” Explain with the help of inheritance of ABO blood group in humans.
Show Hint
Codominance allows the expression of both alleles simultaneously, demonstrating a unique pattern of inheritance.
Updated On: Jan 13, 2026
Hide Solution
Verified By Collegedunia
Solution and Explanation
Codominance is observed when both alleles in a heterozygous state express equally.
Example: ABO blood group inheritance.
IA and IB alleles: These are codominant, while the i allele is recessive.
A person with the IAIB genotype has an AB blood group because both IA and IB are expressed.
Was this answer helpful?
0
0
Top Questions on Diseases and Causes
Match List I with List II:
Choose the correct answer from the options given below:
- NEET (UG) - 2025
- Biology
- Diseases and Causes
(a) Why do the symptoms of malaria not appear in a person immediately after being bitten by an infected female Anopheles? Give one reason. Explain when and how do the symptoms of the disease would appear.
- CBSE CLASS XII - 2024
- Biology
- Diseases and Causes
- In a normal human female, why does menstruation only occur if the released ovum is not fertilised? Explain.
- CBSE CLASS XII - 2024
- Biology
- Diseases and Causes
- (c) Name the hormone and its source organ responsible for the events occurring during the proliferative phase of menstrual cycle. Explain the event.
- CBSE CLASS XII - 2024
- Biology
- Diseases and Causes
- If the base adenine constitutes 31% of an isolated DNA fragment, then what will be the expected percentage of the base cytosine in it? Explain how you arrived at the answer.
- CBSE CLASS XII - 2024
- Biology
- Diseases and Causes
View More Questions
Questions Asked in CBSE CLASS XII exam
If vector \( \mathbf{a} = 3 \hat{i} + 2 \hat{j} - \hat{k} \) \text{ and } \( \mathbf{b} = \hat{i} - \hat{j} + \hat{k} \), then which of the following is correct?
- Find the value of $x$, if \[ \begin{bmatrix} 1 & 3 & 2 \\ 2 & 5 & 1 \\ 15 & 3 & 2 \end{bmatrix} \begin{bmatrix} 1 \\ x \\ 2 \end{bmatrix} = \begin{bmatrix} 0 \\ 0 \\ 0 \end{bmatrix} \]
- Two point charges of \( -5\,\mu C \) and \( 2\,\mu C \) are located in free space at \( (-4\,\text{cm}, 0) \) and \( (6\,\text{cm}, 0) \) respectively.
(a) Calculate the amount of work done to separate the two charges at infinite distance.
(b) If this system of charges was initially kept in an electric field \[ \vec{E} = \frac{A}{r^2}, \text{ where } A = 8 \times 10^4\, \text{N}\,\text{C}^{-1}\,\text{m}^2, \] calculate the electrostatic potential energy of the system.- CBSE CLASS XII - 2025
- Electrostatics
- 4,000 shares of ₹ 10 each were forfeited for non-payment of second and final call money of ₹ 2 per share. The minimum amount that the company must collect at the time of reissue of these shares will be :
- CBSE CLASS XII - 2025
- Accounting for Share Capital
- If $y = a \cos(\log x) + b \sin(\log x)$, then $x^2y'' + xy'1$ is:
- CBSE CLASS XII - 2025
- Continuity and differentiability
View More Questions