Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.
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Eukaryotic cells contain a number of organelles.
The zygote is the initial cell formed when two gamete cells are joined by means of sexual reproduction.
Mitosis is the process by which a eukaryotic cell divides into two cells and the number of chromosomes remains unchanged.
Eukaryotic cells with nuclei measuring only a few micrometers may contain nearly 2 meters (6.6 ft) of DNA, coiled multiple times.
This animation compares the life cycles of mosses and ferns, helping to understand the general life cycle of plants.
Widespread heterotrophic unicellular organisms with constantly changing shapes
This animation demonstrates the development of the human embryo and fetus.
Based on their life cycle, insects can be grouped into three categories: ametabolous, hemimetabolous or holometabolous insects.