Yes, all animals inhale (in) and exhale (out). Except for fish.
        
             
        
        
        
Answer:
DNA is made up of a sugar phosphate backbone .
it has4 bases namely adenine ,thymine ,guanine and cytosine shortened to A T G C 
adenine and thymine are connected by 2 hydrogen bonds and guanine and cytosine are connected by 3 hydrogen bonds
the two strands are anti parallel in nature ie, if one strand is from 3 to 5 the strand is from 5 to 3.. there are three types of DNA depending on the environment... they are adna bdna and zdna 
Explanation:
hope it helps.... 
good luck 
 
        
             
        
        
        
Answer:
Early prophase: the DNA and centrioles duplicate and the centioles move and form the mitotic spindle. Middle prophase: microtubles from the spindle attach to the chromosomes. Late prophase: the chromosomes move to the equatorial plane. 
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Answer:
cant really answer much since you need the class results for these. but i can simplify question 1. so, does the class results prove that the traits made my dominant alleles are the most common? or in other words, are traits made  by dominant alleles most common in the class results? 
number 4 is yes because there are more possibilities that the dominant trait will occur than the recessive trait. therefore, it is more common and the conception is correct