Quite the contrary, it is the only consideration necessary to establish moral consideration. Deflections aside we are not discussing magical cows or Ferengi Pirates. We are discussing the ethical, moral, political, and emotional ramifications of terminating the product of human reproduction. For the record, human reproduction does not lead to magical talking cows. It leads to more humans.
The talking cow is a thought experiment to show that we can easily consider non-humans as worthy of moral worth. If possessing human DNA were necessary for moral worth, then we wouldn't consider non-human entities as possessing moral worth. But I consider all the fantasy and science fiction I have seen, from Chronicles of Narnia to Star Trek, and how I view the nonhuman characters who are practically persons as worthy of the same respect as the human ones. When I imagine them as real or think of other beings like them as, my feelings of moral worth towards the hypothetical do not diminish. However, if humanity was a necessary condition, then I should not have these feelings of moral worth. Because of this, I can only conclude that possessing human DNA is not a necessary condition for moral worth. If it was, I would discount any possibility of moral worth
If possessing an organism posessing human DNA was a sufficient condition to moral worth-i.e. if it was enough to warrant moral worth- then any organism with human DNA would require the same care and respect we give to all the all other people. However, I can take a petri dish, put a human cell in it, change some of the DNA through mutation, and watch it fill out the petri dish. I would not consider the petri dish as posssssing moral worth. However, if human DNA was sufficient for moral worth, then the petri dish would possess moral worth, as it fulfills all that is required for moral worth- namely, possessing human DNA. But it clearly does not.
Because of these thought experiments, particularly the second one, it appears that having human DNA does not automatically make some biological organism worthy of the same moral respect we give another person. If human DNA did automatically grant something moral worth, then we should arguing for the moral rights of petri dishes with human skins cells in them. But we aren't. So long as my petri dish thought experiment holds true, then saying "human DNA alone is all that is required for moral worth" is false.
And you would be wrong.
What is wrong with my argument?
This is PETA, Enviro-marxist, VHEMT nonsense.
Great counter argument. Please explain why you aren't petitioning for the rights petri dishes with human cells in them if an organism possessing human DNA is all it takes for that organism to possess moral worth.