double recessive gene

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Double Recessive Gene

A double recessive gene refers to a gene that must be inherited from both parents in order for a particular trait or characteristic to be expressed in an individual.

Sample sentences:

Both of John's parents carried the gene for red hair, so he inherited a double recessive gene and now has red hair.
The double recessive gene for blue eyes was the reason why Sarah and her brother both have striking blue eyes.
People with a double recessive gene for a genetic disorder may pass it on to their children, even if they themselves don't have the disorder.