With sympatric speciation a physical barrier arises and separates two populations ending gene flow between them.

velocity and height

answer: 45

explanationyou have to add as well to be it could be

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.