A fork of the D3.js tree example, this visualization displays a family tree for the Reddy lineage, using an animated, collapsible hierarchy. Each node represents a family member, with the node’s fill color determined by its generation level, while parent-child links are drawn as smooth cubic Bézier curves using a diagonal path generator. The code leverages the `d3.layout.tree` API and SVG `circle` and `text` elements to render the structure, with names and parent relationships provided in a hard-coded JavaScript array. Node clicks trigger animations to expand or collapse branches, controlled by the `transition` function.