Coupling and repulsion are the two faces of:
A) Meiosis
B) Mutation
C) Linkage
D) Crossing over
Duplication was first reported by:
A) Bridges
B) Morgan
C) Sturtevant
D) None of these
The copy choice theory of crossing over was first given by:
A) Morgan
B) Muller
C) Belling
D) Janssens
Crossing over plays an important role in the process of:
A) Mutation
B) Heredity
C) Evolution
D) Variation
Recombination occurs in:
A) Leptotene
B) Zygotene
C) Pachytene
D) Diplotene
Linkage as the distance between two genes:
A) Decreases, decreases
B) Unaffected, decreases
C) Decreases, increases
D) Increases, increases
Why did Mendel not recognize the linkage phenomenon in his experiments?
A) He studied only pure plants
B) He did not have a powerful microscope
C) The characters he studied were situated on different chromosomes
D) He had too many chromosomes to handle
Deletion leads to alteration in:
A) Gene number
B) Sequence of genes
C) Structure of the gene
D) All of these
Who gave the theory of linkage?
A) Morgan and Castle
B) Beadle and Tatum
C) Watson and Crick
D) Bateson and Punnett
Repeats occur due to:
A) Deletion
B) Inversion
C) Translation
D) Duplication

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