PowerPoint Presentation for Genetics Explanation

I am creating 5-7 flat illustration slides for a PowerPoint presentation to explain the basics of genetics to patients. Each slide will feature one illustration to help convey concepts sequentially. I need assistance designing these illustrations to ensure they are clear and engaging for a non-specialist audience. Please find attached my initial presentation draft. I am a student in genetic counselling and I am looking to have this designed so I can use it to explain patients' conditions in a clear and natural flow during consultations. Please take a moment to read through the notes, as they outline the sequential explanation I have in mind for each concept. Any feedback or suggestions on your end are also very welcome. I'm looking for somthing like corporate design. Think simple geometric shapes, a calm and cohesive color palette, minimal detail, and a polished finish.