C. their DNA is very different
DNA is made out of Deoxyribose sugar, phosphate, and nucleotides
Polysaccharides at made up of 2 or more monosaccharides bonded together
Answer:
I don't know what you said
Explanation:
The answers that best fit the blanks are MATERNAL BLOOD ANALYSIS and ULTRASOUND, respectively. In prenatal diagnosis, there are certain methods that should not be done routinely for the reason that these may injure the fetus, except for routine ultrasound, which checks the status of the fetus, and maternal blood analysis, which assesses the current status of the mother.