Draw a schematic diagram of a part of double stranded dinucleotide DNA chain having all the four nitrogenous bases and showing the correct polarity.

Explanation

To draw a schematic diagram of a part of a double-stranded dinucleotide DNA chain that includes all four nitrogenous bases and shows the correct polarity, follow these steps:

### Step 1: Draw the Backbone
- Start by drawing two parallel lines to represent the sugar-phosphate backbone of the DNA. The backbone consists of alternating deoxyribose sugar and phosphate groups.

### Step 2: Indicate the Polarity
- Label one end of the first strand as the 5' end and the other end as the 3' end. Do the same for the second strand, but ensure that the 5' end of one strand aligns with the 3' end of the other strand, indicating that the strands are antiparallel.

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