1. The reproductive cells (eggs and sperm) and the tissues that produce them in an organism; the lineage of cells that pass genetic material to offspring.
Usage: Biology/genetics term; Usually used in plural or as a mass noun; Contrasts with somatic cells (body cells)

Examples

• Mutations in the germlines can be passed down to future generations.
• Scientists study germlines to understand how traits are inherited.
• Damage to germlines from radiation is a serious health concern.
• The germlines of plants and animals develop differently during embryonic growth.
• Genetic testing can detect abnormalities in germlines before reproduction.