Microbes are classified into various groups on the basis of their characteristics to make the study easier.
Commensalism is an association between two different species where one species enjoys a benefit and the other is not significantly affected. Probably the best example of commensalism is the relationship between cattle egrets and large herbivores
There would be 2 dwarf(homozygous recessive)and 2 tall (heterozygous dominant)offsprings.
Can’t view photo, clarification please