They adamantly reject depictions of the fertilized ovum as an entity separate from the woman, much less as an entity with the full status of a person.
McDonagh laments that the persistent failure of commentators and judges to identify the fetus as the cause of pregnancy has meant that the right of a woman to consent to a pregnancy relationship with a fertilized ovum is "[t]he one type of consent that is completely missing from the abortion debate .
The hCG in the blood begins to rise shortly after implantation of the fertilized ovum
and is a marker for monitoring fetal development.
Everyone of the higher animals starts life as a single cell -- the fertilized ovum
Because she is prematurely menopausal Mary will require hormone therapy to prepare her uterus for the fertilized ovum
A fertilized ovum requires about seven days to travel down the Fallopian tube and become implanted in the endometrial lining of the uterus.
Whatever its method of action, it effectively prevents the fertilized ovum from becoming implanted--and pregnancy does not take place.
Sgreccia, President of the Pontifical Academy for Life, said the "union of the feminine chromosome and the masculine chromosome contains in itself two pro-nuclei, and it is a fertilized ovum
in which the process of fertilization has already begun.
Hardliners within the Catholic community defined the expulsion of a fertilized ovum
as abortion and held that emergency contraception should be prohibited because it may prevent the implantation of a fertilized ovum
The question as to when a fertilized ovum
becomes an inviolable human person is still an open one in Catholic teaching.
The writers point out that pregnancy does not begin at the time of the ovum's fertilization, but only when the uterus receives the fertilized ovum
, a process that requires about one week.
But is a fertilized ovum
already an embryo, even before any mingling of the genetic material of the sperm and egg?
The fertilized ovum
contains a genetic code which is microscopically present and complete.
Still others voiced outrage over the treatment of women by the church, targeting especially the church's opposition to the so-called "morning after" pill, which prevents implantation of a fertilized ovum
However, the pill not only prevents ovulation most of the time; it also frequently prevents the fertilized ovum
from implanting itself in the womb.