Draw a well-labeled diagram of sectional view of male gametophyte/microspore of an angiosperm and write the functions of any two parts labelled. (Any four labels).

Question

Read the passage given below and answer the questions that follow: In recombinant DNA technology, restriction enzymes are used as they recognize and cut DNA within a specific recognition sequence. BamHI is one such restriction enzyme which binds at the recognition sequence 5’-G↓GATCC-3’ and cleaves this sequence between G and G on each strand, whereas AluI binds at the recognition sequence 5’-AG↓CT-3’ and cleaves these sequences between G and C on each strand.
If Alu I is used to cut the given DNA strand, how many DNA fragments would be formed? Write the sequence of each fragment formed with its polarity.
\begin{figure}[H] \centering \includegraphics[width=0.8\textwidth]{Screenshot 2025-01-17 115424.png} \caption{DNA sequence representation with complementary base pairing.} \label{fig:dna_sequence} \end{figure}

Answer 1

\begin{figure}[H] \centering \includegraphics[width=0.8\textwidth]{Screenshot 2025-01-16 110748.png} \caption{Sectional view of Male Gametophyte is presented here.} \label{fig:male_gametophyte} \end{figure} Diagram depicting a microspore, with key components such as the vegetative nucleus, generative nucleus, exine, and intine, clearly identified. The functions of these components are as follows: * Vegetative nucleus: Orchestrates the elongation of the pollen tube. * Generative nucleus: Undergoes division to produce two male gametes essential for fertilization.

Draw a well-labeled diagram of sectional view of male gametophyte/microspore of an angiosperm and write the functions of any two parts labelled. (Any four labels).

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Solution and Explanation

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