The commonly used vector for human genome sequencing was/were:
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- Retrovirus
- T-DNA
- BAC and YAC
- Plasmid Vector
The Correct Option is C
Solution and Explanation
Top Questions on Blood
- Study the following list of bioactive substances and their action:
\[ \begin{array}{|c|c|} \hline \textbf{Bioactive Substance} & \textbf{Role} \\ \hline \text{Statin} & \text{Removal of oil stains} \\ \text{Cyclosporin A} & \text{Removal of clots from blood vessels} \\ \text{Streptokinase} & \text{Lowering of blood cholesterol} \\ \text{Lipase} & \text{Immunosuppressive agent} \\ \hline \end{array} \] - (b) Answer the following questions on sicklecell anaemia:
(i) Why is sicklecell anaemia, a human blood disorder, so named? - (a) A man with blood group ‘A’ marries a woman with blood group ‘AB’. The first child born to them has blood group ‘B’. Work out a cross to find the genotype of the father. Give the possible blood groups and their genotypes of the children that could be born to this couple. (Use a Punnet square).
- (b) State the basis of ‘ABO’ blood grouping in humans.
Explain the events which occur within a female Anopheles mosquito after it has sucked blood from a malaria patient.
Questions Asked in CBSE CLASS XII exam
A school is organizing a debate competition with participants as speakers and judges. $ S = \{S_1, S_2, S_3, S_4\} $ where $ S = \{S_1, S_2, S_3, S_4\} $ represents the set of speakers. The judges are represented by the set: $ J = \{J_1, J_2, J_3\} $ where $ J = \{J_1, J_2, J_3\} $ represents the set of judges. Each speaker can be assigned only one judge. Let $ R $ be a relation from set $ S $ to $ J $ defined as: $ R = \{(x, y) : \text{speaker } x \text{ is judged by judge } y, x \in S, y \in J\} $.
- CBSE CLASS XII - 2025
- Relations and Functions
Given below is a heterogeneous RNA formed during Eukaryotic transcription:
How many introns and exons respectively are present in the hnRNA?
- CBSE CLASS XII - 2025
- Eukaryotic Transcription
- Four friends Abhay, Bina, Chhaya, and Devesh were asked to simplify \( 4 AB + 3(AB + BA) - 4 BA \), where \( A \) and \( B \) are both matrices of order \( 2 \times 2 \). It is known that \( A \neq B \) and \( A^{-1} \neq B \). Their answers are given as:
A certain reaction is 50 complete in 20 minutes at 300 K and the same reaction is 50 complete in 5 minutes at 350 K. Calculate the activation energy if it is a first order reaction. Given: \[ R = 8.314 \, \text{J K}^{-1} \, \text{mol}^{-1}, \quad \log 4 = 0.602 \]
- CBSE CLASS XII - 2025
- Organic Reactions
- Using integration, find the area of the region bounded by the line \[ y = 5x + 2, \] the \( x \)-axis, and the ordinates \( x = -2 \) and \( x = 2 \).
- CBSE CLASS XII - 2025
- Evaluation of Definite Integrals by Substitution