<span>The inserted genes may have unexpected harmful effects.</span>
        
                    
             
        
        
        
Answer:
Option 1, 0
Explanation:
Complete question 
Flower color in the varieties of pea plants studied by Mendel is controlled by alleles at a single locus. A group of peas homozygous for purple flowers is grown in a garden. All flowers are purple, yet there is some variation in the intensity of the purple color. The estimated heritability for this observed variation in flower color would be
- 0.
- 0.5.
- 0.75.
- 1.
- Cannot be determined without additional information
Solution 
Given all the pea plants in the garden are homozygous purple (PP)
If we cross two PP parents, the following offspring will be produces
PP * PP
PP, PP, PP, PP
This means that all offspring are also homozygous purple.
Thus, chances of inheriting variation in the purple color of offspring are negligible. However, the variation in their color can be due to their individual interaction with the variable factors in the environment
Hence, option 1, 0 is correct
 
        
             
        
        
        
It’d be at least 70 million years.
        
             
        
        
        
double  stranded  molecule does  not  describe the  structure  of RNA. Most  RNA  are  single  stranded  with  partial  double  stranded  regions.  RNA  has  basic   component  as  the  DNA  that  is have  four  nitrogenous  base,  contain  phosphate  group  and  have  5  carbon sugar.