The development of an embryo is one of the which prevents entry of other sperm, fusion of most awe inspiring biological phenomena and the two haploid nuclei occurs and within about the study of cell differentiation can be traced 30 minutes the pigmented cortex rotates with respect to the underlying cytoplasm and in so back in antiquity to Aristotle and beyond However, there are few modern sciences which doing it reveals a grey, crescent shaped area on pay more than a cursory obeisance to their the side of the egg opposite to the point of founders and few students seem very interested entry of...