Answer:
good question the answer is A. lol
Explanation:
 
        
                    
             
        
        
        
Answer:
Option B, Rr pp × rr Pp
Explanation:
Given 
Walnut Comb is produces when  one dominant allele R is present at one gene locus and at least one dominant allele P is present at a second gene locus - R* P*
Rose Comb - at least one dominant allele is present at the first locus and two recessive alleles are present at the second locus - R* pp
Pea comb - two recessive alleles are present at the first locus and at least one dominant allele is present at the second  - rr P*
Single comb - two recessive alleles are present at the first and the second locus  - rrpp
Parent are rose combed and pea combed
For being rose genotype must be R* pp 
and for being pea combed genotype must be rr P*
Rr pp x rr Pp
will  produce 
Walnut comb  with genotype Rr Pp
Single comb  with genotype rrpp
and pea comb  with genotype rrPp
Hence, option B is correct
 
        
                    
             
        
        
        
A tornado is a violently rotating column of air extending from the base of a thunderstorm to the ground, often made visible by a condensation funnel. The formation of tornadoes<span> is complicated. So the answer would be A
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2 because if you were to multiply the bases versus the acidity it would come out to 2