slacker!
mesoderm
mesodermmesoderm
Mesoderm
The middle layer is formed during the gastrulation. This layer develops into muscles, bones and blood vessels.
mesodermmesoderm
Muscle type is polygenic and is probably influenced early on during the gastrulation phase. Since there is substantial variation within families all the alleles are not on the same chromosome.
The Heart
Cardiac
It's the circulatory system
circulatory system
O indeed it is(: Yourwelcomee! By:H.B.
circulatory system
Depends on the circulatory system