noncrossover

adjective
non·cross·over | \ ˌnän-ˈkrȯ-ˌsō-vər \

Definition of noncrossover 

: having or being chromosomes that have not participated in genetic crossing-over

First Known Use of noncrossover

1915, in the meaning defined above

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The first known use of noncrossover was in 1915

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noncrossover

adjective
non·cross·over | \ (ˈ)nän-ˈkrȯ-ˌsō-vər \

Medical Definition of noncrossover 

: having or being chromosomes that have not participated in genetic crossing-over

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