Who was the first to observe living microorganisms through a microscope

Antonie van Leeuwenhoek

Antonie van Leeuwenhoek was one of the first people to observe microorganisms, using a microscope of his own design, and made one of the most important contributions to biology. (Robert Hooke was the first to use a microscope to observe living things.)

                                             ^Robert Hooke used it to observe living things, I don't believe it was microorganisms though.

Hope this helped!!  :)

the answer is c on e2020, bud.

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.