Final answer:
The DNA extracted from an onion and cauliflower would exhibit differences in the sequences of nucleotides, which are the building blocks of DNA.
Step-by-step explanation:
The DNA extracted from an onion would be different from DNA extraction from cauliflower due to variations in the genetic makeup of the two plants. Each organism has its own unique DNA sequence, which determines its traits and characteristics.
For example, onion DNA would contain genetic information specific to onions, such as the ability to grow underground bulbs and the pungent taste and smell associated with onions. On the other hand, cauliflower DNA would contain genetic information specific to cauliflower, such as the compact and curd-like structure of the vegetable.
Therefore, the DNA extracted from an onion and cauliflower would exhibit differences in the sequences of nucleotides, which are the building blocks of DNA.