You can separate your responsabilities with two additional classes:
$j('.normal-checkboxes:checkbox').bind(...);
$j('.yes-no:checkbox').bind(...);
And then wrap your checkboxes like this:
<div class="normal-checkboxes">
<input type="checkbox">
<input type="checkbox">
</div>
<div class="yes-no">
<input type="checkbox">
<input type="checkbox">
</div>
EDIT:
$j(document).ready(function(){
// When clicking a .normal-checkboxes..
$j('.normal-checkboxes:checkbox').bind('click', function() {
// Remove the property checked for all normal-checkboxes
$('.normal-checkboxes:checkbox').prop('checked', false);
// Add the property checked to the clicked one
$(this).prop('checked', true);
});
});