What is the key difference between a coelom and a pseudocoelom? a) a coelom is a true body cavity, whereas a pseudocoelom is a false coelom that is not fully functional. b) pseudocoeloms arose early in animal evolution and evolved into coeloms. c) only a coelom is fully lined with mesoderm tissue.

Tropical rain forests support more species per unit area than any other terrestrial ecosystem. what is one way rain forests are important to the health of the biosphere?

Pls me i need this ! each cell has genes activated depending on it's job and what kind of cell it is. it is the presence of that causes the repressor protein to fall off and unblock the gene on the lac operon. if a gene is turned on then it is being an additional circular chromosome found in some bacteria that is used in genetic engineering.

What is required in the genotype of an individual to show a recessive trait? a.two recessive alleles b.at least one recessive allele c.no recessive alleles