An advocate of gradualism, the idea that evolutionary change occurs gradually over time.

The process of transplanting tissues, organs, or cells from one individual to another.

An organism that results from the grafting of two different species or varieties.

A condition that occurs when transplanted immune cells attack the host’s body tissues, commonly seen in bone marrow or organ transplants.

The technique of joining parts of different plants to grow together as a single plant, commonly used in agriculture and horticulture.

A small, hard, and dry seed, often from cereal plants like wheat or corn.

A metric unit of mass equal to one thousandth of a kilogram, commonly used to measure the weight of small quantities.

An amino acid that functions as a neurotransmitter and plays a key role in metabolism.

A group of storage proteins found in the seeds of various plants, especially in the cereal family.

Abbreviation for glycine, the simplest amino acid that serves as a building block for proteins.