5.Which is the first step in photosynthesis?. a. the production of ATP
b. the absorption of light
c. the production of NADPH
d. None of the above

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.