A grandparent and grandchild share about 25% of their dna on average, with natural variation from roughly 15% to 35%.

Half siblings usually share about 25 percent of their DNA, with real matches ranging from roughly 17 to 34 percent.

A banana shares around 60% of its genes with humans, but only a tiny slice of total DNA matches once whole genomes are compared.

You share about 12.5% of your DNA with a first cousin, with smaller percentages for more distant cousins.

Most nieces and nephews share around 25% of their dna with a full aunt, though real results can range widely for each family.

On average, you share about 25% of your DNA with a half sibling, with real test results usually falling between roughly 17% and 34%.

Humans share roughly 96–98 percent of their DNA with gorillas, depending on how scientists compare the two genomes.

Humans share about 98–99% of alignable DNA with chimpanzees and roughly 93% with rhesus macaques, with other monkeys sitting a bit lower.

Humans share roughly half of their genes with fungi, but the exact DNA overlap with mushrooms varies by species and how scientists compare genomes.

Humans share around 96–97 percent of their dna sequence with orangutans, reflecting a deep great ape family connection.