Thank you for posting Mr Walker. Your initial post made points about ethics that had not yet been introduced that I know of into this thread.
For others I do take into account the emotions of the mother (and the father) and the many negative feelings one might have that might lead them to abortion. The fear, the depression, the anxiety, the what ifs, and how would life
Here is my final post with excerpts from the transcript from a NOVA episode which aired in 2001. It is about life.
QUOTE
No matter who you are, once upon a time you looked like this. From a single cell you built a body that has one hundred trillion cells. You made hundreds of different kinds of tissues and dozens of organs, including a brain that allows you to do remarkable things.
How did you do it?
Today, we can look closer than ever before: into the womb, into a cell, into the essence of life itself. Not only can we see what's happening, but now we're beginning to see how it happens—the forces that build the embryo, the molecules that drive this remarkable change. We're uncovering the most intimate details of how life is created, the secrets behind life's greatest miracle.
We were all a single cell once.
QUOTE
MELINDA TATE IRUEGAS: This is my mom and dad and your mom and dad.
SERGIO IRUEGUS: And my mom and dad on their wedding day. You definitely have your mom's eyes. And you can see I definitely have my dad's eyebrows.
MELINDA TATE IRUEGAS: You do have your dad's eyebrows.
NARRATOR: Melinda Tate Iruegas and her husband, Sergio, are expecting their first baby.
SERGIO IRUEGUS: Here's Mom and Dad with me and my brother.
MELINDA TATE IRUEGAS: Yeah.
SERGIO IRUEGUS: My sister hadn't come along yet. But this is what our little boy might look like. That's me.
Any child will have features from both parents. It will look like both the father and mother and begins developing in the womb. They might have the father's eyes or the mother's eyebrows. They might have the mother's smile or even the father's posture when he looks up to you.
QUOTE
But what about the rest? What are the chances that one tiny sperm will reach and fertilize an egg? Sperm are often portrayed as brave little warriors forging their way through hostile terrain to conquer the egg. Nothing could be further from the truth.
For every challenge the sperm face, success is, to a great extent, controlled by the woman's body and even the egg itself.
The path to fertilization is fascinating so read the main article if you wish. But a woman's body controls whether she will conceive or not.
QUOTE
For in fact it is now in very grave danger. Stripped of its protective coating, the blastocyst could be attacked by the mother's immune system as a foreign invader. White blood cells would swarm in to devour it. In its own self-defense, the ball of cells produces several chemicals that suppress the mother's immune system inside the uterus, in effect, convincing the mother to treat it like a welcome guest.
Then it is free to get to work. Searching for food and oxygen, cells from the blastocyst reach down and burrow into the surrounding tissue. Eventually, they pull the entire bundle down into the uterine lining. And sooner or later, the mother will notice.
From the very first stages the life fights to survive and depends on the mother accepting the life inside her.
QUOTE
MELINDA TATE IRUEGAS: Even brushing my teeth would make me...the minty flavor was just, like, gross. And it made me feel nauseous. And I would get up and I would try to eat something. And if it...anything smelled off slightly, then it was...it made me nauseous.
SERGIO IRUEGAS: My mother has told me stories of how my father had gone through morning sickness. And of course that never really registered until the first time it started happening to me.
MELINDA TATE IRUEGAS: He literally got...he would get really, really nauseous and upset, and actually get physically ill sometimes.
SERGIO IRUEGAS: There was a couple of times when that...well, more than a couple of times when that actually happened.
NARRATOR: Not everybody gets morning sickness. Sometimes months can go by before the mother gets any sense of the drama unfolding within her body.
The mother's immune system might change but one of the miracles of life is even the father can get morning sickness. Showing there is some connection to him and that child. It does not happen all the time but it does happen.
QUOTE
The lower cells are destined to form structures like the lungs, liver, and the lining of the digestive tract. The middle layer will form the heart, muscles, bones and blood. And the top layer will create the nervous system, including the spinal cord and the brain, as well as an outer covering of skin, and eventually, hair.
This is a human embryo three weeks after fertilization. Less than a tenth of an inch long, its neural tube, the beginning of the nervous system, is already in place. A couple of days layer, the top of the tube is bulging outwards on its way to becoming a brain. With the primitive brain cells exposed, we can see some are sending feelers, making connections to their neighbors.
As the days pass, changes proceed at a rapid-fire pace throughout the embryo. Everywhere, cells are multiplying. And they're on the move. Some reach out to one another, forming blood vessels. A heart begins to beat. As the embryo lengthens the precursor to the backbone forms. Groups of cells bulge out on the sides, the beginnings of arms and legs.
Just about three weeks later a heart begins to beat.
QUOTE
So when the embryo is developing, how does a cell turn on the right set of genes and create the right proteins?
Part of the answer seems to be location. Once the basic body plan is established, with a head on one end, back and front, and left and right sides, cells seem to know exactly where they are and what they are supposed to become. This is because cells talk to each other in the form of chemical messages.
Chemicals in one cell can trigger a reaction in the cell next door that can spread to the cell's nucleus and turn genes on or off. But what's really going on in there? How does a gene get turned on?
If all the DNA in a single cell were stretched out, it would be about six feet long. But it's all wound up very tightly, coiled around balls of protein. For a gene to be turned on, something has to come in and loosen up the right section. Then the cell's machinery can latch on and read the DNA, the first step on the long road to building a protein. Those molecules that can turn genes on play a key role in every aspect of development, including the process that transforms the embryo into a boy or a girl.
Actually all embryos are girls until a gene called SRY is necessary to make it a boy before chromosomes come into play. But now that I read further past the quote below I see this is explained in this article. Moving on and reading further still.
QUOTE
SERGIO IRUEGAS: We didn't want to know. We wanted to do it, I guess, the old fashioned way.
MELINDA TATE IRUEGAS: Well, you kind of wanted to know. We did a wedding ring test, where you took a piece of your hair and the wedding band and you hold it over the belly and if it moves one way in a circle, then it's a girl; if it moves in a straight line it's a boy. And that said it was a girl.
And there was a point when we went into the ultrasound where I was waffling. It was like, "Well, we could look. At this very moment we could look and we could find out." And I didn't say anything.
SERGIO IRUEGAS: See...but...I was trying to be strong because she was very adamant about not...
MELINDA TATE IRUEGAS: I said, "No, no, no."
NARRATOR: By the time most ultrasounds are done, around 18 weeks or so, doctors can sometimes make out the sex. But in the early weeks it's impossible.
A little bit of magic. Will it work?
QUOTE
And the same for the ear. The outer ear quickly takes shape, but the fetus can't hear yet. Sound conduction relies on the tiny bones of the inner ear, and most of the bones in the fetus start out as cartilage. By the fourth month, hard bone can be seen forming in the hand and the leg. Finally, after five months, the process is complete in the inner ear. And then, the fetus begins to hear sound.
SERGIO IRUEGAS: I would sing songs, right on her belly, just so that it could hear my voice and get to know my voice. But there was...
MELINDA TATE IRUEGAS: And what