WPF - Radio button, how to move focus after selection?

Question

For the following buttons:

<RadioButton GroupName="Group1"
             IsChecked="{Binding Path=IsYes,
                                 Converter={StaticResource InverseBool},
                                 FallbackValue=True}"/>
<RadioButton GroupName="Group1"
             Content="_Yes"
             IsChecked="{Binding Path=IsYes,
                                 FallbackValue=False}"/>

When keyboard operated and hitting Y or N to select the option, how to move focus to the next control? Other than code behind