Two siblings, Lillian and Natalie, have the same mother and father and look very much alike, but they are not twins. They are curious how much genetic information is shared between them. Although siblings can be phenotypically similar, what is a reason non-twin siblings are not genetically identical

-50% of their DNA is being shared by two siblings.

Explanation:

-According to research, two siblings possessing similar parents tends to share 50% of the genetic information as they're same yet not twins.

-Irrespective of the fact that two siblings could be similar "phenotypically" yet there are two different reasons that non-twin siblings aren't identical genetically:

1. Both the siblings didn't grow up similarly.

2. Instead of having the same parents, both of them doesn't have similar genes.

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