In Buddhism, our consciousness (vijñāna) with the body’s death doesn't die. It can adapt itself, if fertilization is successful, to a new embryo and with it a new carnal existence. Science teaches us that DNA is a fractal antenna. In this regard, it is certainly something for the after-death consciousness “signal” to latch onto and download itself into another embryo.
This process also necessitates an intervening period called antara or in Tibetan bardo by which the adaptation can take place. This is where karma comes into the picture. It is a latent tendency to follow the previous life and further its aims. This entire process is what in Buddhism is called rebirth and samsara. It is also a kind of intense simulation game from which there is no apparent escape.
With modern Buddhism's leaning towards materialism including the belief that there is no survival after death, the idea that consciousness doesn't die and is the transmigrant from one life to the next is almost heresy to its ears. Nevertheless, this is a stubborn fact that modern Buddhism cannot erase. The return to the nescience or avidya of the womb is almost a guarantee. Furthermore, we are reminded of it every day when we feel the urge to fall asleep.
Modern Buddhism certainly does not have the big picture of Buddhism nor, for that matter, does modern man understand the world as it should be understood. Man's exit strategy can only hope for annihilation when death approaches. But this is just a wish to erase the memory of one's life without removing the drives and impulses to further the previous life's aims.