Percentage of DNA inherited from each generation of ancestors
This is an excerpt from the second episode of the series "The Origin of Humanity and How the Peoples and Ethnic Groups of the Planet Were Formed."
Here, the episode attempts to explain the approximate percentage of ancestors in each generation who pass on a portion of their DNA to us. It also explains from which generation onward the number of ancestors who do not pass on any fragment of their DNA to us exceeds 50%.
It is important to note, however, that there is no generation from which we do not inherit at least a small fragment of their DNA. It simply happens that the number of ancestors from a very distant generation who pass on a portion of their DNA to us is very small compared to the total number of ancestors who lived in that generation.
For example, a person's DNA is composed of approximately 1,466 portions or fragments inherited from ancestors who lived 20 generations ago (around 500 years ago). And since a person has 1,048,576 ancestors from 20 generations ago, this means that at most only 1,466 of them passed on some of their DNA, that is, 1,466/1,048,576 = 0.001 (or approximately 0.1% of the ancestors from 20 generations ago).
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"Brandenburg Concerto No. 4 in G, Movement I (Allegro), BWV 1049" Kevin MacLeod (incompetech.com)
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