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  • Created by: GGB2016
  • Created on: 21-06-16 15:35

1. Why are sex linked conditions more common in males than females?

  • Most conditions occur on the X chromosome and males are XX therefore they are more likely to inherit the illness.
  • Because males inherit diseases instead of females
  • Most conditions occur on the X chromosome therefore only one dominant allele is inherited for them to gain the condition.
  • Because the male immune system is weaker
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Other questions in this quiz

2. What is the ratio for unlinked genes?

  • 5:1
  • 9:3:3:1
  • 6:3:1
  • 3:1

3. What is an oncogene?

  • A change in the number of chromosomes
  • One portion of a chromosome
  • A gene that has the potential to cause cancer
  • The gene that determines the sex of an individual

4. What is the physical expression of the combination of alleles?

  • Genes
  • Genotype
  • Phenotype
  • Allele description

5. What is complete dominance?

  • Where a dominant allele is expressed over a recessive allele
  • Where neither allele is dominant
  • Where none of the offspring produced show dominant alleles
  • Where a gene only has one allele


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