Considering the truth of the book of Genesis

Let's accept, for the sake of argument, that the Bible was written down by Moses.

The Bible is also in some sense the primal answer to the primal question. Or, in other words, we can also imagine that Moses had asked God about the Meaning of Life, and that the Bible is the divine response.

God could have responded, "Well, Moses, in each living thing there are small molecules, which you can call deoxyribonucleic acid, made up of far smaller things, called atoms, and these moleclues regulate the function of the human cell, another very small thing, and they can replicate themselves...

...and that's why you can breed a donkey and a horse and get a mule."

But saying that wouldn't have helped Moses. In fact, that really wouldn't have answered Moses' question. Moses wanted to know what it all meant. And we can only imagine that, if God is moved to answer a question, being God, such an answer would be full and complete and suited to the intent of the questioner.

God's response wouldn't have been a biochemistry seminar.

Instead, God would have said : "In the beginning, I created the heaven and the earth. And the earth was without form, and void; and darkness was upon the face of the deep. And my Spirit moved upon the face of the waters. And I said, 'Let there be light' and there was light. And I saw the light, and said that it was good."

And Moses would have said, "Now I begin to understand."