Pretty sure its scavenger, the others make no sense
It’s a medication that can treat bacteria. Hope this helps!
There will be a slim chance of the brother be affected because the trait would turn out to be recessive which means the person genes would be carried out without appearing in that person
Choanal atresia<span> is a congenital disorder where the back of the nasal passage </span><span> is blocked, usually by abnormal bony or soft tissue (membranous) due to failed recanalization of the nasal fossae during fetal development.</span>