2 is the answer I THINK look at other ones first 
        
             
        
        
        
T-cells are a type of white blood cell that circulate around our bodies, scanning for cellular abnormalities and infections.
        
             
        
        
        
<span>The sequence of alternation of generation is; gametes->zygote->sporophyte->spores->gametophyte->gametes.
The attached diagram shows clearly this looped cycle. Alternation of generation
occurs in a more advanced land plant that
has distinct
haploid and diploid phases in their life
cycle. The diploid phase usually involves
the sporophyte while the haploid phase involves the gametophyte</span>
        
             
        
        
        
Answer:
the genotype of the parent guinea pigs are as follows:
RrBb (rough, black) and Rrbb (rough, white)
Explanation:
Since the phenotype of smooth coat is present in the offspring, the parent genotype cannot have RR alleles for their coat. Similarly, the rough, black parent cannot have BB alleles in its genotype because that will not yield a white coat color in its offspring.
After making the dihybdrid cross, the probability obtained for each phenotype is given below: 
rough black: 
rough white: 
smooth black: 
smooth white: 
Hope that answers the question, have a great day!
 
        
             
        
        
        
Answer:
 3 molecules of water and use glycerol and fatty acid reactants