Which technology are environmental scientists using in conjunction with electronic collars to track the movements of polar bears?
O A. Geographic information systems (GIS)
O B. Environmental DNA (DNA) surveillance
O C. The Global Positioning System (GPS)
O D. Unmanned aerial systems (UAS)

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.