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The Theory Of The Gene by Thomas Hunt Morgan
Contributed by: Day
  • 1. What organism did Morgan use for his experiments?
A) Peas
B) Worms
C) Fruit flies (Drosophila melanogaster)
D) Mice
  • 2. What did Morgan discover about genes?
A) They are made of proteins.
B) They are inherited randomly.
C) They are found in the nucleus.
D) They are located on chromosomes.
  • 3. What term describes the observable traits of an organism?
A) Karyotype
B) Phenotype
C) Allele
D) Genotype
  • 4. What does the term 'recombination' refer to?
A) The re-assortment of genetic material during meiosis.
B) The mixing of species.
C) The cloning process.
D) The alteration of DNA sequences.
  • 5. What did the term 'crossing over' refer to?
A) The fusion of gametes.
B) The separation of sister chromatids.
C) The exchange of genetic material between homologous chromosomes.
D) The mutation in genes.
  • 6. What is a linked gene?
A) A gene that is non-functional.
B) A gene that has multiple alleles.
C) A gene located on the same chromosome as another gene.
D) A gene involved in epistasis.
  • 7. What type of inheritance pattern did Morgan study?
A) Incomplete dominance
B) Autosomal dominant
C) Sex-linked inheritance
D) Codominance
  • 8. What is the significance of the concept of linkage?
A) Linkage causes mutations.
B) All genes are unlinked.
C) Genes can change position on chromosomes.
D) Genes close together on a chromosome are inherited together.
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