Final answer:
Another sample of DNA from the same strawberry would be identical in sequence but may vary slightly in quantity. The difference in ploidy levels suggests that, typically, a strawberry would yield more DNA than a kiwi due to more chromosome copies. The extraction method and fruit characteristics can also influence the quantity of DNA isolated.
Step-by-step explanation:
When isolating DNA from the same strawberry, the DNA should theoretically be identical if you are not taking it from a sperm or egg cell. Since most cells in an organism contain the same genetic information, another sample from the same strawberry will have the same DNA sequence. However, the quantity of DNA may vary slightly due to differences in cell sizes or due to experimental error during the isolation process.
In an experiment comparing DNA isolation between a strawberry and a kiwi, one would need to consider that strawberries are octoploid (8n), meaning they have eight sets of chromosomes, while kiwis are usually hexaploid (6n) with six sets of chromosomes.
This genetic difference suggests that, all else being equal, a strawberry may yield more DNA than a similarly sized kiwi due to having more copies of its chromosomes. Factors such as the extraction technique's efficiency and the physical characteristics of the fruits (such as the water content and cell structure) can also affect the amount of DNA isolated.