The process of intramembranous ossification generates bone within a pre-existing template composed of mesenchymal tissue. in contrast, endochondral ossification generates bone within a pre-existing template composed of

hyaline cartilage
periosteum
articular cartilage
adipose tissue

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

answerscaffolding proteins;