Plzz help, I dont understand this. I need this done soon!

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Why do we perceive objects as retaining their brightness under different lighting levels?

Give examples of selective advantage of organism’s body part/organ