Answer:
Reduced penetrance or incomplete penetrance
Explanation:
Penetrance refers to the extend which a certain gene or set of genes is expressed in a population.
It can be complete where there is expression of the gene in a population having it.
Whereas, in reduced penetrance is where the mutation is not expressed in every individual in the population having it.
For instance polydactyly exhibits reduced penetrance since the parents had the mutation it was not expressed it came to be expressed on their pedigree.
 
        
             
        
        
        
Offspring   with  a  3:1  ratio  suggest  that  both  parent  that   both  parent  that   give  rise   to  this  offspring  were  both   heterozygous.  Heterozygous  individual   is   someone  who  has  two  different  allele  at  a  locus whereby  by  one  gene  is   dominant   over  the  other  gene.  example  of  heterozygous   parent   is  a parent  Aa   pair  of  alleles.  In  this  pair  gene  A  is  dominant  over  gene  a
        
                    
             
        
        
        
certain hydrogen bonds are formed so that A goes with T and G with C
 
        
                    
             
        
        
        
Many radioactive atoms<span> that </span>have large masses undergo radioactive decay<span> by </span>releasing<span> a </span>particle<span> that is </span>identical<span> to a </span>helium-4 nucleus<span>. what </span>changes<span> in ... in the </span>original atom<span> are </span>expected<span> as a </span>result<span> of this </span>natural phenomenon<span>? the </span>atomic<span> .</span>