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