Huntington’s disease is caused by ; it’s effects O a dominant gene; do not occur until middle age O recessive genes; do not occur until middle age O a dominant gene; can be treated with a blood transfusion O recessive genes; can be treated with a blood transfusion Sydney was born with genes giving her musical abilities; Sydney also seeks out opportunities to enhance her musical talent. This type of gene-environment correlation is called: O a passive gene-environment correlation. O an evocative gene-environment correlation. O an active gene-environment correlation. O a productive gene-environment correlation.
