Answer:
20. Genotypes is all bb, phenotype is all blue.
21. 50% TT 50% Tt genotypes, 100% tall phenotypes
Step-by-step explanation:
To find the genotypes and phenotypes, we do our punnett sqaure by drawing a square, dividing it into 4 squares, putting our cross in and determining the genotypes of our offspring. Since blue eyes are recessive, they'll be represented by bb. Since tall plants are dominant, they're represented by Tt or TT. Capital letters are dominant while lowercase signifies recessive. Hope it helps :)