inversión cromosómica

A form of chromosome aberration in which parts of a chromosome break and reunite in a reversed order. No genetic material is lost or gained, but the positions of the involved ...

inversión

Biologie; Biologie celulară

A reversal in the order of genes on a chromosome segment.

inversión

Geografie; Geografie fizică

Véase inversión de temperatura.

hongos

Arheologie; Evoluţie

A group of organisms comprising the kingdom Fungi, which includes molds and mushrooms. They can exist either as single cells or make up a multicellular body called a mycelium. ...

ley

Arheologie; Evoluţie

A description of how a natural phenomenon will occur under certain circumstances.

pirimidina

Arheologie; Evoluţie

A kind of base. In DNA, cytosine (C) and thymine (T) are pyrimidines. In RNA, cytosine (C) and uracil (U) are pyrimidines.

ecosistema

Arheologie; Evoluţie

A community of organisms interacting with a particular environment.

célula fotorreceptora

Arheologie; Evoluţie

A cell, functionally part of the nervous system, that reacts to the presence of light. It usually contains a pigment that undergoes a chemical change when light is absorbed. This ...

mitocondria

Arheologie; Evoluţie

A kind of organelle in eukaryotic cells. Mitochondria produce enzymes to convert food to energy. They contain DNA coding for some mitochondrial proteins.