Sorry folks, but my brain is stuck on a chromosome fusion. Obviously, chromosomes are details of material anatomies. It seems to me that the main thing we learn from a chromosome fusion is that matter (material of which chromosomes are made) is subject to change. The *Catechism of the Catholic Church, Second Edition *talks about matter in paragraph 365. Emphasis is mine.
**365 **The unity of soul and body is so profound that one has to consider the soul to be the “form” of the body: 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.
To me, the body made of matter sounds on the scientific side.

Interestingly, when this universal Catechism was put together, genes and the Piltdown Man were common knowledge. The concept of polygenism had been thoroughly addressed in
the 1940’s. The results are in the 1950 Encyclical
Humani gereris. While some scholars urged updating Catholic doctrines to comport with science, the *CCC *is a flat out example of the permanency of Divine Revelation.
When the first three chapters of Genesis were written, the author was well aware of other cultures, other peoples, in addition to the Hebrews. He did not need chromosome knowledge to tell the difference between non-humans and humans. Obviously, the author thought it necessary to start at the beginning of human history. Genesis 1:1 credits the material creation to God and then it shifts dramatically in verse 26 to the unique nature of humans. But there is nothing in those first chapters in Genesis about other peoples in addition to the two humans who are the principal actors in the drama of chapters one, two, and three . It is in Chapter four, after Original Sin had been committed, that other humans are referred to.
Even though the author was a non-science kind of guy, he still had to face the problem of other people populations in existence. While the author did not know that animals and humans shared similar genes, he knew the essential difference between them and himself which overrode his lack of science 101. It was obvious that human creatures mated with human creatures. Thus, from the basic material knowledge of human anatomical functions, it could be logically deduced that humans did not come from non-human sources. (Genesis 2:20)
The author’s own population had remained faithful to One God. One God as Creator could make it possible for two individuals, parents, to be made in His image. (Genesis 1: 28) Now, I doubt that the author knew what all “image of God” meant; yet, he recognized that the importance of that fact had to be square one. One God means there is one kind of image. Knowing that God was the one Creator, and observing the same uniqueness of all peoples, the first Genesis author was open to the Divine Revelation of two sole very unique parents who were very separate from other species.
Now, the first Genesis writer could have been confused (like ourselves) by the observation that humans and animals have a lot in common. Consequently, the writer includes the detail in Genesis 2: 20 which clearly demonstrates the general biological difference between species.
In addition, further details in Genesis 2: 15 and Genesis 3: 8, provide a basic explanation for the Hebrew religion which comes from a personal relationship with God. Because humans are spiritual creatures in the sense of being able to personally communicate with God by being in the image of God, there would be no differences in humans because of when they were born. As said in the beginning of this post, our decomposing anatomies made of matter are subject to change. What does not change is the immediate direct creation of our spiritual soul. We are born fully complete because of our nature’s personal relationship with God via being in the “image of God”.
(Information source: Genesis 1: 26- 31; Genesis 2: 16-17;
CCC, 355-358; CCC, 364-366;
CCC, 1730-1732)
Links to the
Catechism of the Catholic Church, Second Edition
scborromeo.org/ccc.htm
usccb.org/beliefs-and-teachings/what-we-believe/catechism/catechism-of-the-catholic-church/
To be continued.