7.- En la reproducción de los vertebrados la fecundación determina el: I) tipo de segmentación del huevo.
II) sexo cromosómico del embrión.
III) reestablecimiento de la diploidía.
Es (son) verdadera(s)
A) solo I.
B) solo II.
C) solo III.
D) solo I y III.
E) solo II y III.

#PSU

Does mitochondria still meet the definition of a eukaryote why or why not?

Why is it important to study each branch of earth science?

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.