Examples of Genetic Diversity Humans have created dog breeds by selective breeding. Coyotes are naturally evolved generalist species adaptive to an array of environments. Varieties of plants like medicinal plants are obtained by interbreeding of plant species.

What is another word for genetic diversity?

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring).

Single nucleotide polymorphisms are the most abundant type of genetic variation in the human genome in terms of their number. They occur at an interval of about one SNP in every kilobase of DNA sequence throughout the genome when the DNA sequences of any two individuals are compared.

This is because most variation is within, rather than between, races. On average, any local population contains 85% of all human genetic variation, and any continent contains 94%….

• Italians and Ethiopians.
• Senegalese and Kenyans.
• Italians and Swedes.
• Chinese and Lakota (Sioux)
• Saudi Arabians and Ethiopians.

They come from the same fertilized egg and share the same genetic blueprint. To a standard DNA test, they are indistinguishable. But any forensics expert will tell you that there is at least one surefire way to tell them apart: identical twins do not have matching fingerprints.

Because of recombination, siblings only share about 50 percent of the same DNA, on average, Dennis says. So while biological siblings have the same family tree, their genetic code might be different in at least one of the areas looked at in a given test. That’s true even for fraternal twins.

Relatives are identified by comparing your DNA with the DNA of other 23andMe members who are participating in the DNA Relatives feature. When two people are found to have an identical DNA segment, they very likely share a recent common ancestor.

If you and another person both have the same ancestor, there’s a chance that you both inherited some of the same DNA. (Learn more about genetic inheritance.) So if we find that you “share” DNA with someone, you might be related (see figure 2).

It’s legal in all 50 states to marry a cousin who’s your second cousin or further. Third and fourth cousin marriages are the, quote, “best of both worlds.” They’re breakfast food for dinner. You avoid the inbreeding risks of closer cousins, but your genes are just close enough that they naturally work well together.

Royal intermarriage is the practice of members of ruling dynasties marrying into other reigning families. Alternatively, kinship by marriage could secure an alliance between two dynasties which sought to reduce the sense of threat from or to initiate aggression against the realm of a third dynasty.

“And Solomon became allied to Pharaoh king of Egypt by marriage, and took Pharaoh’s daughter, and brought her into the city of David, until he had made an end of building his own house, and the house of the Lord, and the wall of Jerusalem round about.”