What type of organic compounds are sugar an starches

The rate at which molecules water and oxygen can enter a cell is determined by the-

How does an angiosperm prevent self pollination

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