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El \"crossing over\" es el intercambio de fragmentos de cromátidas homólogas que ocurre en la meiosis. Este fenómeno garantiza la variabilidad genética y la recombinación de los caracteres hereditarios.
El sobrecruzamiento, crossing-over o entrecruzamiento cromosómico es el proceso por el cual las cromátidas de cromosomas homólogos se aparean e intercambian secciones de su ADN durante la profase I de la meiosis.
Learn how meiosis reduces chromosome number by half and how crossing over creates genetic variation. See diagrams and examples of meiosis I and II, and how homologues exchange DNA segments.
27 de abr. de 2017 · Learn what crossing over is, how it occurs during meiosis, and why it is important for genetic variation and inheritance. See diagrams, examples, and linkage maps of crossing over events.
Hace 3 días · Crossing over is a cellular process that happens during meiosis when chromosomes of the same type are lined up. When two chromosomes — one from the mother and one from the father — line up, parts of the chromosome can be switched.
Aprende cómo los cromosomas homólogos intercambian fragmentos en la profase I de la meiosis. Mira el video, lee la transcripción y participa en las discusiones sobre este tema de genética.
Learn about meiosis, the process of cell division that produces gametes (sex cells) with half the number of chromosomes. Find out how crossing over, homologous chromosomes, and sister chromatids are involved in meiosis.
