Answer: This is because a parent with type AB blood has both A and B antigens therefore, the child must inherit either A or B antigen from the parent. 
Explanation: In ABO blood type, blood types are classified on the basis of the antigens present in the red blood cells. There are two types of antigens: A and B antigens.
A blood type is so named because it has A antigens, B blood type has B antigens, AB blood type has both A and B antigens while O blood type has no antigens.
 Each of these blood types is controlled by two alleles, and children inherit one allele from each parent. If a parent has AB blood type, none of his offsprings will have O blood type because each offspring must inherit either antigen A or B from this parent. 
 
        
                    
             
        
        
        
The characteristics that most of the top hit sequences share are; They contain a ribosomal RNA (rRNA) sequence. Additionally, they contain a sequence of an internal transcribed spacer. The ribosome is a cellular machine found in all organism. It serves to convert the instructions found in messenger RNA into the chains of amino-acids that make up proteins. The ribosomes is responsible for the synthesis of proteins. Internal transcribed spacer refers to the spacer DNA situated between the small-subunit ribosomal RNA and large-subunit rRNA genes in the chromosome or the corresponding transcribed region in the polycistronic rRNA precursor transcript. 
        
             
        
        
        
Answer:
b) dumping used oil into street drains
Explanation:
 
        
             
        
        
        
Electrocardiograph (EKG or ECG) technicians operate equipment that measures, monitors, and graphically traces the electrical activity of the heart. Physicians use the graph (electrocardiogram/EKG/ECG) to diagnose and monitor patients' heart problems.
        
             
        
        
        
Answer:
When the muscle starts to contract and needs energy, creatine phosphate transfers its phosphate back to ADP to form ATP and creatine. This reaction is catalyzed by the enzyme creatine kinase and occurs very quickly; thus, creatine phosphate-derived ATP powers the first few seconds of muscle contraction.