Final answer:
DNA in strawberry cells and human cheek cells is located in the nucleus, while in E. coli cells, it's located in the cytoplasm. Hypotheses about DNA quantity in fruits like strawberries and kiwis require experimental verification. Different cell types express different subsets of genes, leading to phenotypic diversity.
Step-by-step explanation:
Location of DNA in Different Cells
The DNA in cells used from strawberries is located within the nucleus, just as it would be in any eukaryotic cell, such as those from your own cheek. However, if we had used E. coli cells, the DNA would be found in the cytoplasm because E. coli is a prokaryote and lacks a nucleus.
Hypothesizing on DNA Quantity in Fruits
To test the hypothesis on whether a kiwifruit and a strawberry of the same size have approximately the same amount of DNA, practical experiments need to be conducted in triplicates. Although each somatic cell generally contains the same DNA, different species may have different amounts of DNA due to factors like genome size and the presence of non-genetic material within the cells.
Differences in Gene Expression
Despite all cells containing the same genetic material, they can exhibit different characteristics because cells express only a subset of genes, reacting to their environment and function within the organism. This concept explains why cells in various parts of an organism or in different conditions can display various phenotypes, although they harbor identical DNA sequences.