Answer:
D. A segment of DNA molecule
Explanation:
Gene is a segment of a DNA molecule that holds instruction needed for the synthesis of useful products (protein). Ideally, DNA is the storage material of genetic information in a cell. The DNA harbors the GENE, which itself is being expressed in order to use the information contained in it to produce useful products responsible for the phenotype of an organism.
A gene contains sequences made up of nucleotide bases that determines the sequence of amino acids to be produced, and ultimately the type of protein. 
 
        
                    
             
        
        
        
Central Dogma is the molecular process of multiple steps that helps to maintain homeostasis in the cell. The basic parts of protein synthesis are transcription and translation. 
<h2>Central Dogma:</h2>
It is the molecular process of multiple steps that helps to maintain homeostasis in the cell.
This includes,
<h3>
Replication: </h3>
Formation of new DNA molecules from DNA strands with help of DNA polymerase.
<h3>
Transcription: </h3>
It is the process by which RNA is produced by the help of RNA polymerase.
<h3>
Translation: </h3>
It is the process of protein formation with help of RNA strands and ribosomes.
Therefore, the basic parts of protein synthesis are transcription and translation.
Learn more about Central Dogma:
brainly.com/question/8388651
 
        
             
        
        
        
Selective breeding is breeding between two animals of similar characteristics. cross breeding occurs when two animals from the same species create a new breed. such as when a husky and wolf have a puppy. they are the same species but different breeds.
        
             
        
        
        
Answer:
<h3>I assume this is the assignment about investigating changes in trait distribution? if I,m right </h3>
 
        
             
        
        
        
(D) small intestine because after all the food is breaking down into it's bulding blocks then, all the nutrients will go into the small intestine. Whatever the body does not need will go into the large intestine.