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Evolution Crossword-2

1 2
3     4                    
      5 6
  7     8    
9                   10                  
11                
                 
                 
                 
                 
                 
               
           
           
  12                
       
       
13                                    
     
14                      
 
 
15                                      

Across
3.Determining the age of rock layers and matching it with fossils. (2 Words)
9.Maintaining organism's genetic makeup in an environment. (2 Words)
12.Relative reproductive efficiency of various individuals or genotypes in a population.
13.Disappearance of forms that are considered intermediate between several extreme variants. (2 Words)
14.Random changes in allelic frequencies in a population. (2 Words)
15.Maintaining organism's genetic makeup in an environment. (2 Words)
Down
1.Reduced form of a functional structure that indicates shared ancestry. (2 Words)
2.Study of the distribution of plants and animals (or living organisms) on earth.
4.Darwin's term for the selective breeding of organisms selected for certain traits. (2 Words)
5.Permanent loss of a species.
6.Hereditary changes in groups of organisms over time.
7.Changes from one phenotypic property to a new one. (2 Words)
8.A new feature that had not appeared in common ancestors. (2 Words)
10.Evolution over a long period of time when adaptive changes accumulate slowly in populations
11.More primitive characteristic that appeared in common ancestors. (2 Words)

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