Some cells randomly express one parent's version of a gene over the other

Team finds that some cells activate only one of their two gene copies during development, altering protein yields and raising new questionsWe are a product of our parents. Maybe you have your mother's large, dark eyes, and you inherited your father's infectious smile. Both parents contribute one copy, or allele, of each gene to their offspring, so that we have two copies of every gene for a given trait - one from mom, the other from dad. In general, both copies of a gene are switched on or off as an embryo develops into an adult. via Health News from Medical News Today Read More Here..