What base in dna pairs with adenine
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Ответ:
Thymine
Explanation:
Nucleic acids (DNA and RNA) are formed by the union of nucleotides, each of which in turn consists of phosphate, pentose and nitrogenous base.
Nitrogenous bases are classified as purine and pyrimidine as follows:
Purine bases: Adenine (A) and Guanine (G) Pyrimidine bases: Cytosine (C), Thymine (T) and Uracilla (U)In both DNA and RNA, the Guanine nitrogen base (G) binds exclusively to cytosine (C). The difference occurs in relation to the other bases: whereas in DNA adenine (A) binds only to thymine (T), in RNA adenine (A) will always be linked to the nitrogenous base Uracila (U).
Ответ:
Chemical in the birds foot produces the red coloring.
Explanation:
Hypothesis refers to a statement about particular observation. A hypothesis is tested for its validity through experimentation. The hypothesis about the causes of presence of red feathers in scarlet ibis can by represented by statement "Chemical in the birds foot produces the red coloring". This testable statement tells about possible cause of presence of red feathers in scarlet ibis.