Correct answer - 120 for Thymine.
Why? - 320 Nitrogen bases.
Cytosine = 40, Cytosine = Guanine.
Therefore Guanine = 40.
320 - 80(Cytosine and Guanine)
240.
Adenine and Thymine = ?
Adenine = x and Thymine = x.
2x = 240.
X = 240/2
X = 120.
Adenine 120, Thymine = 120, Cytosine = 40 and Guanine = 40.
If it is always expressed it is dominant, also dominant allele is a possible answer. If it is not expressed unless both alleles are the same, it is recessive.
An example of photosynthesis is how plants convert sugar and energy from water, air and sunlight into energy to grow. The biological synthesis of chemical compounds in the presence of light
b. the first stage because it could never be in the secound stage