Oooooooh, can we see a screenshot of your family tree? If the parents are close together on the heads chart then it's more likely than not that the children will all look the same. Check out these siblings of mine from a previous generation. Mom and dad were 1 head away from each other on the heads chart and all the kids are equal to mom on the chart:
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Description: Last 4 heads of Head Chart
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Kathy
Lead Tester
Last Day of Work