Human embryos have tails which become tail bones before birth tails also appear in fish reptiles amphibians birds and mammals humans also have hair and produce milk to nourish the young which is unique to mammals what does this indicate

Answer 1

This indicates common ancestry among these different species, as they all share similar developmental features such as tails and the ability to produce milk to nourish their young. These shared traits suggest that these species have evolved from a common ancestor and have adapted similar strategies for survival and reproduction.