The respiratory membrane is a combination of a. atria and alveolar sacs b. respiratory bronchioles and alveolar sacs c. alveolar and capillary walls and their fused basement membranes d. respiratory bronchioles and alveolar ducts

Suppose you have the monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ration 3: 1. if the allele are designated (r & r) respectively, what is the probably genotypes of the rounds seeds with were produced?