Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it. Whether it is biological or not, you just need to understand the child's blood type and compare it.