Cross between "Homozygous Dominant" & "Homozygous recessive" would result in offspring of phenotype 1:1:1:1. When linkage is not occurs!
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Answer:
About 90% of the ozone in our atmosphere is contained in the stratosphere
Explanation:
 
        
             
        
        
        
Answer: 
By 1900, Fingerprint was the evidence which was collected at crime scenes to help positively identify suspects by one particularly unique trait.  No two people can have the same type of fingerprints. It is a unique characteristic which is even not common among identical twins. Therefore, was considered as an important evidence for identification of suspects and linking them with the scene of offence. In 1904, the city of St.Louis, Missouri used fingerprint evidence for the first time for criminal identification.
 
        
             
        
        
        
Genotype frequency: RR is dominant, Rr is heterozygous and rr is recessive. 
R^2+2Rr+r^2 = 1 
R = 0.85
R^2= 0.85*0.85 = 0.7225