Definition: A type of substance found in the body that can trigger an immune response in individuals who do not have it, often seen in different blood types within the same species.

Example: The alloantigen in the blood transfusion was recognized by the recipient's immune system, leading to a reaction.

Definition: A type of element that has a different isotopic makeup compared to the natural form of that element, resulting in a different atomic weight.

Example: The scientist studied the allobar of carbon to understand its unique properties.

Definition: Describing a type of reproduction where organisms breed with others rather than themselves, leading to cross-fertilization.

Example: Many plants are allogamous, relying on cross-pollination to reproduce effectively.

Definition: A type of reproduction in which fertilization occurs between different individuals, rather than within the same individual. This process is common in plants and some animals, promoting genetic diversity.

Example: Allogamy is essential for the genetic diversity of many plant species.

Definition: Relating to something that originates from a different location or source, often used in biology to describe organisms or cells that are genetically different but belong to the same species.

Example: The allogenic cells were used in the transplant to enhance the patient's immune response.

Definition: Relating to the study of how the size of an organism or part of an organism changes in relation to the size of another part or organism, often focusing on growth rates.

Example: The allometric growth of the animal's limbs allowed it to adapt to its environment more effectively.

Definition: The study of how different parts of a living thing grow in size compared to each other as it gets bigger.

Example: Allometry helps scientists understand how different parts of an organism grow in relation to each other.

Definition: A characteristic of a substance that can exist in different forms or structures, especially in terms of its crystal arrangement.

Example: The allomorphism of the mineral allowed it to exist in different crystal structures depending on the conditions.

Definition: A type of mineral that is not crystalline and can be seen through. It is usually colored and is made up of water and aluminum silicate. This mineral often forms in layers or shapes like stalactites.

Example: Allophane is often found in volcanic regions where it forms from the alteration of volcanic glass.

Definition: This term describes an organism that has multiple sets of chromosomes, which come from different species.

Example: The allopolyploid plant exhibited traits from both parent species.

Definition: A type of organism that has more than two sets of chromosomes, which come from different species.

Example: The allopolyploid plant exhibited traits from both parent species, making it unique in its characteristics.