Genetic screening

Aniesha • Baby number 2 due September 2nd 😊😊👶🏾🍼👨‍👩‍👧‍👦
I haven't been pregnant in 7 years so this is fairly new to me. I'm supposed to be going for a genetic screening ultrasound. Can anyone tell me what to expect. Also will I be able to find out the gender at this ultrasound. I'll only be 12 weeks almost 13 weeks.