Understanding Patterns of Inheritance: Where Did My DNA Come From? (And Why It Matters.) – Ancestry.com

Via https://blogs.ancestry.com/ancestry/2014/03/05/understanding-patterns-of-inheirtance-where-did-my-dna-come-from-and-why-it-matters/Ancestry.

The chart below helps illustrate how different segments of DNA might have been passed down from your grandparents to make your unique DNA. Assume each letter represents a segment of DNA. Things to notice are:

  • Which letters get passed down to each generation is random (the fact that the letters spell names in this example is simply to help with the illustration).
  • Not all of the letters get passed down.
  • Just because a child doesn’t have a letter doesn’t mean that an earlier ancestor didn’t have that letter.
  • Siblings can have different combinations of letters

One of the easiest explanations of how DNA can be passed down to succeeding generations I have come across.


About Wichita Genealogist

Originally from Gulfport, Mississippi. Live in Wichita, Kansas now. I suffer Bipolar I, ultra-ultra rapid cycling, mixed episodes. Blog on a variety of topics - genealogy, DNA, mental health, among others. Let's collaborateDealspotr.com
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