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6.2: The Cell Cycle. The cell cycle is an orderly sequence of events. Cells on the path to cell division proceed through a series of precisely timed and carefully regulated stages. In eukaryotes, the cell cycle consists of a long preparatory period, called interphase. Interphase is divided into G1, S, and G2 phases.
Mar 13, 2024 · Cellular senescence is intertwined with physiological and pathological conditions in the human organism. In terms of reproduction, senescent cells are present from reproductive tissues and germ cells to gestational tissues, and participate from fertilization to delivery, going through adverse reproductive outcomes such as pregnancy losses.
Somatic cells reproduce by mitosis. Meiosis is a specialized cell division that only occurs in germ cells that divide to produce sperm or eggs. It produces cells that have only one copy of each type of chromosome (are haploid) Both mitosis and meiosis result in eukaryotic cell division. The primary difference between these divisions is the ...
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Asexual and sexual reproduction are two different ways of producing offspring in living organisms. Asexual reproduction involves only one parent and produces genetically identical offspring. Sexual reproduction involves two parents and produces genetically diverse offspring. This chapter explains the advantages and disadvantages of both types of reproduction, as well as the mechanisms and ...
Sep 8, 2021 · The massive multiplication of cells after conception is possible thanks to cell division, which occurs when one cell splits into two. Cell division not only enables growth but also replaces damaged or dead cells and makes reproduction possible. There are two kinds of cell division: mitosis and meiosis.
Sexual reproduction produces offspring that are unique individuals. Half of their genes come from each parent. Sex cells are called gametes. These are sperm and eggs (or ova) in animals, and ...
