A pure-breeding tree that produces fruit with 12 seeds, the smallest number of seeds possible, is mated with a pure-breeding tree that produces fruit with 36 seeds, the largest number of seeds possible. This polygenic trait is controlled by two alleles, which both contribute to the phenotype, present at multiple loci. When two F1 individuals are mated, 7 phenotypes result. Which of the following statements is FALSE?
◦ There are 3 genes that control this polygenic trait.
◦ The F1 offspring all have 24 seeds.
◦ One of the additive alleles contributes 2 seeds to the seed content of the fruit.
◦ One of the additive alleles contributes 6 seeds to the seed content of the fruit.
◦ One of the F2 phenotypic classes has 18 seeds.
Ernst Haeckel's Tree of Life (1879)
Red-eyed tree frog
Bilateral tree stroking across the back.
A. Clara Peeters Still Life with Fruit and Flowers
Perception of Fruit: Apple
evolution tree