AYUDENME PLS, PROCUREN QUE LA RESPUESTA SEA LA CORRECTA Escoge la forma correcta de representar la organización externa de los seres vivos de menor a mayor nivel:
a. Individuo  Población  Comunidad  Ecosistema
b. Individuo  Comunidad  Población  Ecosistema
c. Individuo  Población  Ecosistema  Comunidad
d. Individuo  Comunidad  Ecosistema  Población

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.