Astrocytes, <span>Star-shaped cells that anchor small blood vessels to neurons.</span>
If the DNA strand is mutated it can cause genetical and physical defects. Just as an extra chromosome can cause Trisomy 21 which cause Down Syndrome.
In the early stages the embryos of four different species will look the same .For example, fish embryos and human embryos both have gill slits. In fish they develop into gills, but in humans they disappear before birth. That what makes them different.
Answer:
1. B Prokaryotes lack a nucleus and membrane-bound organelles
2. C glucose
