The amount of DNA in various types of chicken cells was measured - VCE - SSCE Biology - Question 12 - 2005 - Paper 1
Question 12
The amount of DNA in various types of chicken cells was measured. The following results were obtained.
cell type | picograms of DNA
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Worked Solution & Example Answer:The amount of DNA in various types of chicken cells was measured - VCE - SSCE Biology - Question 12 - 2005 - Paper 1
Step 1
cell type S.
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Answer
To determine which cell type is most likely a sperm based on the DNA content, we should analyze the values presented:
Cell Type R: 2.55 picograms
Cell Type S: 2.61 picograms
Cell Type X: 1.26 picograms
Cell Type Y: 2.54 picograms
Typically, sperm cells have a distinctive amount of DNA that may be different from other cell types. In this case, cell type S has the greatest DNA content, suggesting it may be more complex in terms of genetic information.
Hence, we conclude that cell type S is the most reasonable choice for being a sperm.
Step 2
cell type R.
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Answer
Although cell type R has a significant amount of DNA (2.55 picograms), it is less than that of cell type S.
Step 3
cell type X.
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Cell type X has the least amount of DNA at 1.26 picograms, making it the least likely candidate for being a sperm.
Step 4
cell type Y.
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Cell type Y has a DNA content of 2.54 picograms, which is also lower than that of cell type S.