latest information from biologists suggest that the longest stage in mitosis is Metaphase
The longest stage of stellar evolution is the main sequence phase.
Longest stage of cell cycle would be the interphase
the first stage (opening of the cervix)
prophase I of meiosis I because that is where crossing over occurs
Stage 12 on the 13th July
The first period of prenatal development is the germinal stage, which lasts for the first two weeks after conception. During this stage, the fertilized egg, or zygote, undergoes rapid cell division and eventually forms a blastocyst. The blastocyst implants itself into the uterine wall, marking the end of the germinal stage.
interphase
The earliest stage of human cultural development is referred to as the Paleolithic period, beginning around 2.5 million years ago with the advent of stone tools. The longest stage of cultural development is the Neolithic period, characterized by the development of agriculture around 10,000 years ago leading to settled communities and the rise of complex societies.
The mature stage may sometimes be prolonged by a tilted updraft, but for the most part all stages last around 10 minutes.
Interphase is the longest because 90% of mitosis occurs in this stage and it is when the cells replicate.
The longest phase in meiosis is Meiosis 1.