Subclass variables and methods don't override those in the baseclass?

I'm following somewhat of an Abstract Base Class pattern, that I use a lot in Python. This involves the use of a base class that offers a basic implementation and then can use subclasses to implement specific variations. For example

class Base {
    function doWork() as Void {
        doStep1();
        doStep2();
    }

    function doStep1() as Void {
        System.println("Base Class's Step 1");  // <--- Always prints, not the value that VariationA was initialized with
    }
}

class VariationA extends Base {
    function doStep1() as Void {
        System.println("Variation A's Step 1");
    }
}

instance = new VariationA().doWork();  // prints "Base Class's Step 1"

Since doStep1() is called from a method in the Base class, the version of the method in the Base class is always used, even on instances of VariationA. Is this expected/by design?