Azygote develops into a multicellular organism
through
(1) mitosis and specialization
(2) mitosis and meiosis
(3) recombination and communication
(4) genetic engineering and natural selection

Mitosis and Specialization

Mitosis is a process that occurs during cell cycle which involves the division of a cell to produce two new cells that are identical to itself. Also, it is the splitting of DNA in the cell’s nucleus into two equal sets of chromosomes. Furthermore, mitosis consists of four basic phases which were prophase, metaphase, anaphase and telophase.

Cell Specialization is a process where generic cell changes into specific cells for the purpose of specific task within the body. Furthermore, they are very important in the development of embryos.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

i believe the answer would be b. hope it : )