Which of the below best describes the focus of the questions in the dichotomous key

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?

Which are reasons cells undergo cell division?