Consider the possible genotypes of the offspring of two heterozygous brown goats. the ratio of brown to white offspring in this case would be

geologic time scale (for gradpoint) =)

what is the question?

during expiration the diaphragm relaxes, which causes the diaphragm to move downwards. the contraction of diaphragm increases the space for expansion of lungs. hence, the diaphragm relaxes and positioned downward during expiration.