Recessive allele. Recessive I believe
        
             
        
        
        
It’s C I got you man I’m here
        
             
        
        
        
Answer:
The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
 
        
                    
             
        
        
        
Answer:
Hemopoiesis
Explanation:
Blood is the main connective tissue and consists of plasma and formed elements. The formed elements of blood are erythrocytes, leukocytes and thrombocytes.
Hemopoiesis is the process of formation of red blood cells, white blood cells and platelets. The process of hemopoiesis in adults occur in the bone marrow. Hemocytoblast leads to the formation of all formed elements of the blood.
Thus, the correct answer is option (B).
 
        
                    
             
        
        
        
<u>Cross-sectional </u>research method
Explanation:
The cross-section research design is most widely used in healthcare based researches. It is type of descriptive research based on observational studies.  
This research is usually done on a group of people and provides both qualitative (descriptive interpretations) and quantitative (statistical interferences) details.  
This research is not a relational type of research and hence cannot be used to study, relate or compare about individual changes. The experiences, values, changes observed in individual cases are not taken into consideration.
For example, it is used to study a disease like cancer in a certain group or a population-based on variables like different sex, age religion, ethnicities, location etc of various people. It is not used to study about cancer in an individual person.
It is also not the causal type and cannot be used for cause and effect type of researches. Manipulation of variables is not possible with this research design.