What is gene dominance?

From Prof. Giles Yeo’s Garden Talk “Is our future really written in our genes?
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Gene dominance refers to the way that certain genes can mask the expression of other genes. When a gene is dominant, it is more likely to be expressed or "seen" in an individual's traits or characteristics. In contrast, a recessive gene is less likely to be expressed and may be masked or "hidden" by a dominant gene.

Gene dominance is determined by the specific genes that someone carries. For example, if an individual has a dominant gene for brown eyes and a recessive gene for blue eyes, the dominant gene for brown eyes will be expressed, and the individual will have brown eyes. If an individual has two copies of the recessive gene for blue eyes, the recessive gene will be expressed, and the individual will have blue eyes.

Gene dominance is an important concept in genetics because it helps to explain how traits are inherited and how they are passed down from one generation to the next.

Learn more about this with our series “Getting Into Your Genes”

DNA is the code of life. And it’s the DNA in your genes that determines the traits that make you who and what you are.  Our genes are unique but with so many scientific advancements, what have we learnt about ourselves from our genes?

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