porfavor ayuden gracia. ¿Qué características tiene la fecundación externa?

Spanish

1 answer:

Kobotan [32]3 years ago

3 0

Answer:

La fecundación es la fusión de células germinales en el contexto de la reproducción sexual. El resultado de la fertilización es el cigoto, que contiene el material genético de ambos padres.

En los animales, se hace una distinción entre la fertilización externa, en la que las células sexuales se fusionan fuera del cuerpo y la fertilización interna, que tiene lugar en el cuerpo de la hembra. Este es el caso de todos los vertebrados terrestres amnióticos, incluidos los humanos, pero también de los tiburones, algunos peces óseos y muchos insectos y arácnidos. Con la fertilización interna es necesario que los espermatozoides lleguen al óvulo en el cuerpo femenino antes de la fertilización real.

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