Hey there! 
It is mostly like "B". A new area of science promotes experimentation from a different point of view because everything else is explains why the development of the new area of science which could lead to change in a particular theory but they aren't quite the "best" one 
SO, that is why is mostly likely your result
 is mostly likely your result 
Good luck on your assignment and enjoy your day! 
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<span>The celestial sphere is a coordinate system that uses the Earth as a reference. Declination indicates how far north or south from the celestial equator an object is. Right ascension indicates how far east or west from the vernal equinox an object is.</span>
        
             
        
        
        
Adaption, evolution, variation are all causes of natural selection.
hope this helps..
brainliest..?
        
                    
             
        
        
        
Answer:
Let the "barred" allele be caller B and the "non-white" allele b. Since chickens use chromosomes  and
  and  to determine sex, hens would have chromosomes
 to determine sex, hens would have chromosomes  , and roosters would have chromosomes
, and roosters would have chromosomes  . A Z-linked gene is represented as a superscript on the
. A Z-linked gene is represented as a superscript on the  chromosome,
 chromosome,  for the dominant allele and
 for the dominant allele and  for the ressesive allele.
 for the ressesive allele.
A barred hen would have a copy of B on its Z chromosome, a non-barred rooster would have both copies of b on both Z chromosomes. Using Punnet squares to represent the crosses we get the following cases:

That is a ratio of two barred heterozygote roosters to two non-barred hens. Crossing them we get:

That is a ratio of one barred heterozygote rooster to one barred hen to one non-barred rooster to one non barred hen.
 
        
             
        
        
        
Okay so i have to type 20 characters........answer is B