Alguien sabe cual es el nombre cientifico de la primera planta transgenica la cual se desarrollo a partir de la planta del tabaco, ¿a que familia pertenece? ¿cual fue el primer uso de esta planta del tabaco, que se dio en europa al ser importada desde america? ¿ademas de su uso ornamental y como droga que se fuma ¿que otro uso ha tenido el extracto obtenido a partir de la planta del tabaco? a. como farmaco b. como insecticida c. como diuretico d. como laxante

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation: