Single-cell bacteria do not produce milk. So, mammals who nurse their young had to evolve these organs at some point. The question is: what did their young survive on until those glands were fully developed? Ph.D scientist Jerry Bergman observed, “Mammary glands are complex organs which will not produce milk until the whole complex system is complete. This [also] involves…many supporting structures such as the pituitary gland.” The young mammals obviously survived by some other method until the mammary glands were fully developed. The question then becomes why did mammary glands continue to evolve if the young were being adequately fed? There was an effective, functional system already in place, so why keep evolving another more complicated system to do the same job? A halfway developed mammary gland is not a beneficial mutation so Darwinists cannot simply invoke natural selection. Nature cannot select the system until it’s complete and functioning. Well, how did it get that far, and why? Virtually every OB/GYN recognizes that mother’s milk is superior to anything our most brilliant scientists can create in a laboratory as a substitute. Is this not an indicator that the incredible design of this system and its byproduct came from the hands of a Grand Designer?
Bergman, Jerry. Creation 13(2):39, March 1991.