Someone PLEASE HEL I am so confused. Please answer this question will mark as the brainliest -
In the cardiac cycle suggest the physiological reason for the period of electrical recovery experienced each cycle?

The body of water found at number 4 on the map above is the

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.

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?