Phospholipid molecules of cell membranes are composed of globular parts and hydrocarbon chain. The globular part of the molecule is hydrophilic and located where?
If the mother is affected (sick) by a certain disease and has a heterozygous genotype and the father is normal, this disease is transmitted to half of boys and half of girls. In this case it is about?
the deletion of which chromosome causes obvious morphological and mental defects in the organism, such as microcephaly, strabismus, major mental retardation and is known as the 'cri-du-chat' syndrome?