The simple apologetics teaching is that the nature of a real descendant of Adam and Eve unites the spiritual and material worlds. This truth is found in paragraph 355,* Catechism of the Catholic Church, Second Edition. *I warmly invite those readers who are interested in human nature to continue reading the paragraphs following CCC 355. In addition, I suggest reading CCC 1730-1732.
The Catechism is explicit about the necessary conditions for human nature in the same Chapter you cite:
365 The unity of soul and body is so profound that one has to consider the soul to be the âformâ of the body:234 i.e.,
it is because of its spiritual soul that the body made of matter becomes a living, human body; spirit and matter, in man, are not two natures united, but rather their union forms a single nature.
As I stated above, there is no human nature without a spiritual soul. The fact that there is a single human nature composed of body and soul does not change that reality.
What is evident in verses following Genesis 1: 26-27 is that human nature is also material. Adamâs body will need material nourishment so God graciously created a world with a garden. Our need for bodily nourishment demonstrates that we have inherited Adamâs basic genetics that determined the need to eat.
Well, I thought the question was: how did Adam inherit his genome? It could have been inherited from a male and female hominid through procreation. Then again, it could have been that God formed Adam from the dust of the earth. What does the Catholic Church teach?
362 The human person, created in the image of God, is a being at once corporeal and spiritual.
The biblical account expresses this reality in symbolic language when it affirms that "then the LORD God formed man of dust from the ground, and breathed into his nostrils the breath of life; and man became a living being."229 Man, whole and entire, is therefore willed by God.
To understand this link, I did the common sense thing of going to the following information on the site. From tab âAbout Genetic Geneologyâ
âGenetic" scientists, including paleoanthropologists, have a toolbox of thousands and thousands of genes and billions of chemical base pairs. Human descendants of Adam and Eve are determined by their entire genome.
Not according to the article I sent you, or this one:
Thus on average each of ancestors has contributed only a single block to you, and by chance it is possibly that they contribute zero. This gets worse the further we go back in time, your genome is broken up into more and more chunks, but this does not grow as fast as your number of ancestors. This makes it increasingly likely that you inherit no autosomal material from a particular ancestor.
How much of your genome do you inherit from a particular ancestor?
An additional valuable piece of information is that each individual carries two copies or versions of a gene. The term for these versions is alleles. Alleles develop in a natural way, that is, there can be tiny changes or major changes in the original gene over extended periods of time. In turn, alleles can also change. At conception, the child receives one copy of a particular gene from each parent. With some imaginative thinking, it is easy to understand that by now there could be hundreds of existing alleles of the DRB1 gene.
Once the Church declares that the DRB1 gene with all its alleles is a fundamental part of human nature, then I will accept it. Until then, I will accept what is taught in its authoritative documents.
Applying these basic concepts to real descendants of Adam and Eve, it is entirely possible that a child could receive an allele of a particular gene, for example the DRB1 gene, which developed only a few hundred years ago, well after the appearance of Adam and Eve. What needs to be noted is that the DRB1 gene is part of the human immune system which is integral to human nature. Catholicism directly teaches that Adam had a true human nature. Therefore, it is proper to say that current humans inherited their general immune system from Adam, albeit there were numerous alleles since the dawn of human history.
And before âthe dawn of human historyâ according to modern scientific literature:
Chimpanzees share some class II DRB1 allelic lineages with humans [14-16]. In humans, genetic variation and selective intensity on DRB1 are the greatest in the class II genes [17]. In humans, there are 13 DRB1 allelic lineages (HLA-DRB1*01, *03, *04, *07, *08, *09, *10, *11, *12, *13, *14, *15 and
16), while there are only four allelic lineages (Patr-DRB102, *03, *07 and *10) in chimpanzees [14-16].
A human-specific allelic group of the MHC DRB1
gene in primates.