Answer:
The pig's genotype is Tt
Explanation:
As mentioned in the question that curly hair allele T is dominant over straight tail allele t. 
A heterozygous organism is that in which both alleles for a trait are different. Since Curly hair allele T is dominant over straight tail t, it means that the pig with curly tail and heterozygous genotype will definitely have a genotype of Tt.
Hope it helps! :)
 
        
             
        
        
        
Answer:
Genetic code refers to the instructions contained in a gene that tell a cell how to make a specific protein. Each gene’s code uses the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G) and thymine (T) — in various ways to spell out three-letter “codons” that specify which amino acid is needed at each position within a protein.
Explanation:
 
        
             
        
        
        
The answer is in the question. It's called imprinting.
        
             
        
        
        
Answer:
....I think you should give us the scenarios first so that we can help you. 
 
        
                    
             
        
        
        
P700 is photosystem I. It includes chlorophyll a 670, 680, 695, 700, Chlorophyll b, carotenoids. The active reaction center of photosystem is p700, as it absorbs light of a wavelength longer than 680nm.
P680 or the photosystem II has the following pigments: chlorophyll b, 660, 670, 680, 695, 700, phycobilins, and xanthophylls. The active reaction center, in this case, is p680 of chlorophyll a, as it absorbs the light having a wavelength shorter than 680nm.