Download File - Mr Murphy`s Science Blog

Biology: Genetics
Genetics Revision Questions
1. What is herdity.
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2. What is a gamete?
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3. Explain the term fertilisation?
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4. What is the human haploid and human diploid number?
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5. What is a gene?
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6. Explain the term alleles?
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Mr. E Murphy
Biology: Genetics
7. What is the difference between dominant and recessive alleles?
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8. What do the terms homozygous and heterozygous mean?
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9. What is incomplete dominance?
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10. Explain how sex determination in humans occurs. Include a diagram to illustrate
sex determination.
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Mr. E Murphy
Biology: Genetics
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11. What did Mendel observe when working with the pea plants?
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Mr. E Murphy
Biology: Genetics
12. What experiments did Mendel carry out to answer the question ' what would
happen if I cross-pollinated two pure-breeding varieties'?
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13. What was Mendel's hypothesis?
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14. List Mendel's first law (Law of segregation).
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Mr. E Murphy
Biology: Genetics
15. List Mendel's second law (Law of Independent Assortment).
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16. What does linkage mean in relation to chromosomes?
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18. What are linked genes?
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19. What are sex-linked genes.
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20. List two sex-linked traits in humans. Briefly explain the effect of inheriting these
traits.
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Mr. E Murphy
Biology: Genetics
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21. What is non-nuclear inheritance?
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Mr. E Murphy