Back to quiz

6. What is the ratio for unlinked genes?

  • 5:1
  • 3:1
  • 9:3:3:1
  • 6:3:1

7. What is sex linkage?

  • The physical description of alleles
  • An example of dihybrid genetics
  • Where genes occur on the same chromosome as the sex chromosome
  • A type of gamete

8. What are alleles?

  • A type of cell
  • Alternate forms of a gene
  • The physical description of an individuals genes
  • A portion of a chromosome that codes for one polypeptide

9. What is a mutation?

  • Alternate forms of a gene
  • A portion of a chromosome that codes for one polypeptide
  • A change in the quantity, base sequence or structure of DNA
  • A combination of alleles

10. 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

11. What ratio does incomplete dominance give?

  • 1:2:1
  • 9:1
  • 3:1
  • 1:3

12. What is complete dominance?

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

13. What is aneuploidy?

  • A change in the number of chromosomes that can cause a mutation
  • A change in the structure of chromosomes that can cause a mutation
  • A change in the base sequence of DNA
  • Deletion of a nucleotide base in a DNA sequence

14. What are unlinked genes?

  • Where multiple factors are observed at once
  • An alternate form of a gene
  • Where parents and offspring have a different genotype
  • A type of cell