Science news articles about 'female embryos'

... two sex chromosomes: X and Y. While females have two X chromosomes and no Y ... laboratory influence the growth rate and survival of female embryos and whether this can be improved." She said that her ...

... ago, scientists discovered that when male D. melanogasters mate with female D. simulans, normal males survive, but the female embryos die. "It has remained an unsolved problem," said ...

... members on the embryonic stem cells varied according to whether the cells were derived from a male or a female embryo. Overexpression of BOULE increased the relative proportion of putative germ cells ...