Aplant with round seeds is crossed with another plant with round seeds. round are dominant over oval seeds. when two heterozygous round-seeded plants are crossed, what is expected of their offspring, assuming random chromosome segregation

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%