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Female reproductive cell (gamete).

Use in clinical context

Eggs are formed through the process of meiosis. Each egg is haploid, it contains a single copy of each chromosome with the sex chromosome always an X. Eggs contain the mother’s genetic contribution to any offspring, in addition to one of each chromosome, eggs are also the source of all mitochondrial DNA following fertilisation. An egg and sperm combine during fertilisation to form a diploid cell that goes on to become a complete individual.

Last updated on 31st May, 2019