A genotype is a genetic structure of a cell that can be used to determine characteristics
DNA = thymine, Guanine , adenine and cytosine .
RNA = thymine ,uracil,guanine ,cytosine
fertilization comes first
it is followed by cleavage which is the rapid cellular division which forms the blastula
then comes gastrulation where the 3 germ layers are formed.
followed by organogenesis which consists first forms the organs and then comes the specialization
Therefore your answer would be B
Water from rain and snow that travels to streams