Lineage or hereditary derivation.
A particular extension of the idea of gluing.
A falling upon or invasion.
A sloping passage or incline.
A drop to a lower status or condition; decline.
An instance of descending; act of coming down.
A way down.
The branch of biology that deals with the transmission and variation of inherited characteristics, in particular chromosomes and DNA.
The genetic makeup of a specific individual or species.