Mr Romney's desperate, almost lunatic jingoism keeps him in the running, but the suspicion that he is a squish on zygote murder and gay nuptials, in addition to his membership in a weird, made-up religion, keeps American-authenticity conservatives casting about for a better champion.
By modifying HBB in a fertilised egg (known technically as a zygote), and letting that zygote develop into a human being, you would abolish the disease not only in the resulting individual but also in his or her "germ line"—the line of descent.
Moreover, the differences may help to illuminate a process called epigenesis, which allows characteristics to be inherited in a way that is partly independent of the composition of their DNA.Identical twins are born from a single fertilised egg, or zygote.
This fertilized egg is called a zygote.
Modes of such multiple fission range from budding, in which a daughter nucleus is produced and split from the parent together with some of the surrounding cytoplasm, to sporogony (production of sporozoites by repeated divisions of a zygote) and schizogony (formation of multiple merozoites, as in malarial parasites).
During fertilization, male and female gametes fuse, producing a diploid (i.e., containing paired chromosomes) zygote.
The gametes (an egg and a sperm) fuse in the process of syngamy to form a 2n zygote.
The zygote divides mitotically to form the embryo, which then develops into the sporophyte.
Fusion of an egg and a sperm creates a zygote and restores the 2n ploidy level.
Because inherited variation is largely handled by genes in the chromosomes, organisms that reproduce sexually require a single-cell stage in their life cycle, during which the haploid gamete of each parent can combine to form the diploid zygote.
After fertilization the egg, now called a zygote, is endowed with genes from two parents and has begun actual development.
