Answered: Kelly and Sam are both unaffected carriers for two autosomal recessive disorders, PKU (chromosome 12) and cystic fibrosis (chromosome 7). They are expecting a… | bartleby

PharmVista Official on Instagram: "Chromosome — real science, not myths 🧬 Human sex determination is based on chromosomes: Females = XX, Males = XY. But the X chromosome is much more than a “female chromosome.” It carries hundreds of essential genes responsible for brain development, blood formation, bone growth, immunity, and metabolism. In females, even though there are two X chromosomes, one X is randomly inactivated in every cell (called X-inactivation or Lyonization) to maintain gene dosag

408K views · 2.5K reactions | Missing Y chromosome ️‍ | Subtle Mood Posting | Facebook