1. When fertilization occurs, the resulting zygote is a diploid cell ontaining two of every type of chromosome. This is because one of ead pe of chromosome is -

inherited from the mother and the other from the father. This combination of genetic material creates a unique blueprint for the organism, blending traits from both parents. This genetic pairing ensures diversity, which is key in evolution and adaptation, allowing species to survive in changing environments. During the first stages of development, the zygote undergoes numerous rounds of mitotic division, transforming into a multi-cellular embryo. Each new cell retains the diploid chromosome count, maintaining this blend of parental genetic information as it specializes into various cell types, ultimately leading to the formation of tissues and organs. It’s a fascinating journey from a single cell to a complex organism!