In a dihybird cross, when would the propoetion of parential gane combinations be much higher than non-parential types, as experimently shown by morgan and his group

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In a dihybird cross, when would the propoetion of parential gane combinations be much higher than non-parential types, as experimently shown by morgan and his group
In a dihybird cross, when would the propoetion of parential gane combinations be much higher than non-parential types, as experimently shown by morgan and his group