To pursue clinical embryology you need to do your 12th with biology subject.for admission in undergraduate course Some colleges and universities require an entrance exam for admission to a B.Sc. in Clinical Embryology. Like CUET UG

The exam may include multiple-choice questions on topics like general knowledge, current affairs, English language proficiency, and basic mathematics and biology.you need to have good command pn this subjects to clear the exam.

All the best for your future..