Genetic Inheritance Quiz
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5 questions, one answer each
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1. What shape does a DNA molecule form?
- A. Single strand
- B. Double helix
- C. Triangle
- D. Sphere
2. How many DNA bases code for one amino acid?
- A. 1
- B. 2
- C. 3
- D. 4
3. What is a gene?
- A. An entire chromosome
- B. A small section of DNA that codes for a specific protein
- C. The entire genetic material of an organism
- D. A type of amino acid
4. Why was Mendel's work not recognised during his lifetime?
- A. He never published his results
- B. Chromosomes and DNA had not yet been discovered, so no mechanism explained his findings
- C. His pea plant experiments were flawed
- D. He worked in secret
5. A mutation changes the base sequence in a non-coding region of DNA. Which statement is correct? (HT)
- A. This can never affect the organism because non-coding DNA is unused
- B. This could still influence phenotype, for example by affecting how a gene is switched on or off
- C. This always changes the amino acid sequence of a protein directly
- D. This only affects the chromosome number