Table 3. Ranges of identity percentages calculated for both the nucleotide and the amino acid sequences of profilins in the species analysed.

	Oleaceae Olea europaea	Corylus avellana	Betula pendula	Betulaceae (B. pendula+C. avellana)	Phleum pratense	Zea mays	Poaceae (P. pratense+Z. mays)
Oleaceae Olea europaea	71.8–100	72.3–98.4	73.6–81.9	72.3–98.4	74.4–97.7	70.4–92.9	70.4–100	Nucleotide
	75.4–100	76.3–96.1	74.4–86.5	74.4–96.1	76.1–100	74.2–100	74.2–100	Amino acid
	Corylus avellana	75.7–100	74.3–95.5	74.3–100	75.0–98.4	70.2–86.1	70.2–98.4	Nucleotide
		77.4–100	75.1–96.9	75.1–100	77.8–96.9	76.6–84.7	76.6–96.9	Amino acid
		Betula pendula	99.5–100	74.3–100	74.8–76.1	71.9–75.3	71.9–76.1	Nucleotide
			96.2–100	75.1–100	76.6–79.6	71.9–78.1	71.9–79.6	Amino acid
			Betulaceae (B. pendula+C. avellana)	74.3–100	74.1–98.4	70.2–86.1	70.2–98.4	Nucleotide
				75.1–100	76.6–96.9	74.4–84.7	74.4–96.9	Amino acid
				P. pratense	94.6–100	81.8–87.1	81.8–100	Nucleotide
					94.6–100	79.3–86.2	79.3–100	Amino acid
					Z. mays	79.9–100	79.3–100	Nucleotide
						84.6–100	80.1–100	Amino acid
						Poaceae (P. pratense+Z. mays	79.9–100	Nucleotide
							79.3–100	Amino acid

It also includes the data corresponding to the accumulated percentage for the comparisons between families. When comparing species, nucleotide sequence identity varied from 70.2% (C. avellana×Z. mays) to 100%, whereas identities in the amino acid sequences ranged from 71.9% (B. pendula×Z. mays) to 100%. The higher range of intra- specific variability was that of the Olea europaea L. nucleotide sequences (28.2%), whereas the profilin nucleotide sequences of Betula pendula showed the shorter range of variability (0.5%). Among the families, the percentage of nucleotide identity varied from 70.2% (Betulaceae×Poaceae) to 100% in several cases, while the percentages applied to the amino acid sequences ranged from 74.2% (Oleaceae×Poaceae) also to 100%. Intra- family variability in the nucleotide sequences ranged from 28.2% (Oleaceae) to 20.1% (Poaceae).