Couple has two offspring one child auto recessive disease and the other is normal, what’s the conclusion

Y’all i need answers plss people are saying me and my brother look alike although we’re two different ages. one year apart i’m a girl, btw i’m thinking we could be fraternal twins idk my parents and my friends think we look alike

Aplant may open end close its stomata to prevent excess water loss and maintain

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?