family · mtDNA statistics

Phocidae

4 species in 3 genera. Every region of their mitochondrial genomes, side by side.

Group

species

41.7%

mean GC, whole genome

SD 0.2, range 41.3–41.9%

16,785

median genome length, bp

Range 16,754–16,826 bp

genera

Regions

GC content of each region across Phocidae, % of A + C + G + T

Parameter

Chart

GC % of every region
Region
Whole genome	4	41.66%	0.25	0.006	41.30%Pusa hispida	41.72%	41.88%Pusa sibirica	–	–
Protein-coding	4	42.30%	0.16	0.004	42.09%Pusa hispida	42.32%	42.49%Pusa sibirica	–	–
All rRNA	4	39.65%	0.19	0.005	39.38%Pusa hispida	39.70%	39.82%Pusa sibirica	–	–
All tRNA	4	37.59%	0.17	0.005	37.33%Pusa hispida	37.67%	37.69%Halichoerus grypus	–	–
12S rRNA	4	41.43%	0.27	0.006	41.10%Phoca vitulina	41.47%	41.67%Halichoerus grypus	–	–
16S rRNA	4	38.56%	0.26	0.007	38.19%Pusa hispida	38.64%	38.79%Phoca vitulina	–	–
D-loop	3	44.22%	1.46	0.033	42.53%Pusa hispida	45.00%	45.13%Pusa sibirica	–	–
ND1	4	43.00%	0.29	0.007	42.68%Pusa hispida	43.00%	43.31%Pusa sibirica	–	–
ND2	4	39.57%	0.16	0.004	39.37%Phoca vitulina	39.59%	39.75%Halichoerus grypus	–	–
COX1	4	43.95%	0.22	0.005	43.69%Halichoerus grypus	43.95%	44.21%Pusa hispida	–	–
COX2	4	41.52%	0.49	0.012	40.94%Pusa hispida	41.52%	42.11%Phoca vitulina	–	–
ATP8	4	37.62%	1.09	0.029	36.76%Pusa hispida	37.25%	39.22%Pusa sibirica	–	–
ATP6	4	42.07%	0.49	0.012	41.56%Pusa hispida	42.00%	42.73%Pusa sibirica	–	–
COX3	4	44.39%	0.31	0.007	44.01%Pusa hispida	44.39%	44.77%Pusa sibirica	–	–
ND3	4	44.16%	0.42	0.010	43.64%Halichoerus grypus	44.16%	44.67%Pusa hispida	–	–
ND4L	4	40.99%	0.64	0.016	40.07%Phoca vitulina	41.25%	41.41%Halichoerus grypus	–	–
ND4	4	42.31%	0.11	0.003	42.20%Pusa hispida	42.31%	42.42%Pusa sibirica	–	–
ND5	4	41.70%	0.16	0.004	41.46%Pusa hispida	41.77%	41.80%Phoca vitulina	–	–
ND6	4	38.87%	0.47	0.012	38.26%Pusa hispida	38.92%	39.39%Pusa sibirica	–	–
CYTB	4	43.97%	0.39	0.009	43.42%Pusa hispida	44.08%	44.30%Halichoerus grypus	–	–

Genera of Phocidae

GC content of the whole genome, % of A + C + G + T

Region

Parameter

Chart

Genera of Phocidae

Pusa	2	41.59%	0.41	0.010	41.30%Pusa hispida	41.59%	41.88%Pusa sibirica	–	–
Halichoerus	1	41.73%	–	–	41.73%Halichoerus grypus	41.73%	41.73%Halichoerus grypus	–	–
Phoca	1	41.72%	–	–	41.72%Phoca vitulina	41.72%	41.72%Phoca vitulina	–	–

Codon usage

Share of each codon in all 13 protein-coding genes, across Phocidae

Gene

Loading codon usage…

Every species, region by region

Each region's page lists the value of every species, with the same statistics by class, order or family and a CSV download.

Whole genome Protein-coding All rRNA All tRNA 12S rRNA 16S rRNA D-loop ND1 ND2 COX1 COX2 ATP8 ATP6 COX3 ND3 ND4L ND4 ND5 ND6 CYTB

Phocidae taxon page All data downloads

The charts

Each chart draws the rows of the table under it, in the table's order: sort a column to reorder the chart.Chart sets its axis.
Distribution: the range (line), mean ± SD (bar), median (tick) and mean (dot). Lengths of the regions are on a log scale.
Variation: the coefficient of variation, or the SD for the skews, which vary around zero.
Lifespan r: r with its 95% confidence interval (Fisher z). Lifespan map: r of every parameter in every region at once, bold where the Benjamini–Hochberg q-value over the map is below 0.05.

What the numbers are

Species: species with the region annotated. SD is the sample standard deviation, CV = SD / mean.
Base percentages are over A + C + G + T, so GC % + AT % = 100. Skews are on the L strand as deposited in RefSeq: GC skew = (G − C) / (G + C), AT skew = (A − T) / (A + T).
Min and Max name the species with the extreme value.

Lifespan columns

r is the Pearson correlation of the parameter with log₁₀ maximum lifespan within the group (5 or more species), and p its two-tailed p-value, as on the original MitoAge. They are not corrected for multiple testing or for shared ancestry: the plot shows Benjamini–Hochberg q-values and phylogenetic contrasts.

The original site labelled the base columns with their complements, so its skews have the opposite sign. Seemethods.