Answer:
fibroblasts, macrophages, and mast cells.
Explanation:
Hi, answers are sea wall, groin, breakwater.
The tailbone is an example of a homologous stucture.
Codominance occurs when both alleles for a gene are expressed in a heterozygous offspring.
Hope this helps!
-Payshence xoxo
The first known single-celled organisms appeared on Earth about 3.5 billion years ago, roughly a billion years after Earth formed. More complex forms of life took longer to evolve, with the first multicellular animals not appearing until about 600 million years ago.
