Are humans 75% bananas?
Banana: more than 60 percent identical
Many of the “housekeeping” genes that are necessary for basic cellular function, such as for replicating DNA, controlling the cell cycle, and helping cells divide are shared between many plants (including bananas) and animals.
We do in fact share about 50% of our genes with plants – including bananas.” “Bananas have 44.1% of genetic makeup in common with humans.”
Even bananas surprisingly still share about 60% of the same DNA as humans!
Back to the question on similarity between humans and bananas - overall, the vast majority of human DNA is very different to bananas. However, if you just look at the 2% of DNA corresponding to protein-coding genes, there is a pretty high degree of similarity between them; which is where the 50% comes from.
And, it turns out; the fish are a lot like people. Humans and zebrafish share 70 percent of the same genes and 84 percent of human genes known to be associated with human disease have a counterpart in zebrafish.
About 60 percent of chicken genes correspond to a similar human gene. However, researchers uncovered more small sequence differences between corresponding pairs of chicken and human genes, which are 75 percent identical on average, than between rodent and human gene pairs, which are 88 percent identical on average.
Cows and humans do indeed share 80% of their DNA, the building block of all life on earth, according to this 2009 study in the journal Science. But humans are genetically closer to a host of species than they are to cows, including cats, dogs, horses, and our closest relatives, apes.
Humans are 99.9% identical on a genetic level. The 0.1% difference is caused by insertions, deletions and substitutions in the DNA sequence. These substitutions are known as Single Nucleotide Polymorphisms (SNPs). They occur about every 1000 base pairs.
You may be surprised to learn that 60 percent of the DNA present in strawberries is also present in humans.
According to some estimates, more than 100 billion bananas are consumed globally each year (Bananalink).
Are we 60 bananas?
About 60 percent of our genes have a recognizable counterpart in the banana genome! "Of those 60 percent, the proteins encoded by them are roughly 40 percent identical when we compare the amino acid sequence of the human protein to its equivalent in the banana," Brody adds.
Chimpanzees are our closest relative as a species and we share at least 98% of our genome with them. Our feline friends share 90% of homologous genes with us, with dogs it is 82%, 80% with cows, 69% with rats and 67% with mice [1].
As a result humans share about 40% of our DNA with apples.
Chimpanzees now have to share the distinction of being our closest living relative in the animal kingdom. An international team of researchers has sequenced the genome of the bonobo for the first time, confirming that it shares the same percentage of its DNA with us as chimps do.
Since the onion (Allium cepa) is a diploid organism having a haploid genome size of 15.9 Gb, it has 4.9x as much DNA as does a human genome (3.2 Gb). Other species in the genus Allium vary hugely in DNA content without changing their ploidy.
As a result, we share roughly 90 percent of our DNA with mice, dogs, cattle, and elephants. Coming closer to home, the DNA of human beings and chimpanzees is 98 to 99 percent identical.
How much DNA do we share with pigs? We've all heard the expression “pigging out.” Interestingly enough, human beings also share a huge amount of genetic material with pigs. Almost as much as we do with chimpanzees! The genetic DNA similarity between pigs and human beings is 98%.
Humans, chimpanzees and monkeys share DNA but not gene regulatory mechanisms. Humans share over 90% of their DNA with their primate cousins. The expression or activity patterns of genes differ across species in ways that help explain each species' distinct biology and behavior.
For the first time ever, a group of researchers has sequenced the genome of the spider. This knowledge provides a much more qualified basis for studying features of the spider. It also shows that humans share certain genomic similarities with spiders.
More startling is an even newer discovery: we share 99% of our DNA with lettuce. This could have startling philosophical, scientific and medical implications.
How much of DNA is shared by pigs and humans?
The team looked at genes and protein domains that pigs and humans share. These are important targets for drugs. The researchers found the physiology of the two is 84 per cent similar at the genetic level.
In spite of the evolutionary divergence between octopuses and humans, 69.3% of the genes examined (729 of the 1052 genes) were commonly expressed in the camera eyes of human and octopus.
You may have thought that dogs would be a little closer to humans on the evolutionary scale, but it turns out that cats actually have 90.2% of the DNA in common with us! You read that right! Cats are genetically surprisingly closer to us than dogs, who share about 84% of the genes with us (Pontius et al, 2007).
Human and chimp DNA is so similar because the two species are so closely related. Humans, chimps and bonobos descended from a single ancestor species that lived six or seven million years ago.
What is clear however, is that all organisms are dynamic and will continue to adapt to their unique environments to continue being successful. In short, we are still evolving.