<span>Apocrine sweat glands release sweat into hair follicles. Unlike the more common eccrine sweat glands, these are found only in the armpits, anogenital region, ears and eyelids of humans. Unlike eccrine sweat, apocrine sweat doesn't really contribute to cooling the body. Apocrine sweat contains more chemical compounds than eccrine sweat; these feed bacteria on the skin which produce a detectable odor. Apocrine sweat glands become active at puberty and are most active in times of stress and sexual excitement.</span>
The first invertebrates to show both segmentation and a complete digestive system belong to the phylum Annelida that includes earthworms, leech, sandworms, etc.
These segmented worms have complete digestive system which is also known as tube-within a tube. These can be found in freshwater, marine water or can even be terrestrial.
They would've the same size, be in the same location and contain the same DNA.