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DNA Structure and Function
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DNA Structure and Function
🧬 Part 1: DNA Structure and Base Pairing
1. Label the parts of a nucleotide in the diagram below:
Parts to label: phosphate group, sugar (deoxyribose), nitrogenous base
2. Complete the complementary DNA strand by filling in the missing bases:
Original strand: A - T - G - C - C - A - T - G
Complementary strand: ___ - ___ - ___ - ___ - ___ - ___ - ___ - ___
3. Which bases pair together in DNA? (Choose the correct option)
A pairs with G, T pairs with C
A pairs with T, C pairs with G
A pairs with C, T pairs with G
All bases can pair with any other base
4. What shape does the DNA molecule form?
Single helix
Double helix
Triple helix
Linear chain
📚 Part 2: DNA Function and Heredity
5. Explain how DNA acts as an "instruction manual" for life:
6. Draw a diagram showing the relationship between DNA, genes, and chromosomes. Label each part.
7. Which of the following statements about genetic variation are correct? (Select all that apply)
Meiosis contributes to genetic variation
Fertilisation creates genetic variation
Environmental factors can cause DNA mutations
All offspring are genetically identical to their parents
8. Describe one way that environmental factors can affect DNA:
🌏 Part 3: Cultural Perspectives on Heredity
9. First Nations Australians have rich cultural knowledge about heredity and kinship systems. Explain why it's important to respect and consider different ways of understanding heredity alongside Western science:
10. Think of a trait you share with a family member (e.g., eye colour, height). How might DNA explain this similarity?
11. Complete this sentence: DNA is important for heredity because it ________________
12. Exit Ticket: Write one new thing you learned today about DNA structure or function:
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