3 Questions
What percentage of alleles do siblings typically share on average?
50%
How are identical twins related in a family?
They share the same alleles at every locus
What is the relationship between two family members and the amount of alleles they share in common?
The more closely related two individuals are, the more alleles they share in common.
Study Notes
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The more closely two individuals are related in a family, the more alleles they share in common.
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The most closely related two individuals in a family are identical twins, who share the same alleles at every locus.
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Siblings (including DZ twins) share 50% of their alleles with each other on average, but this is only on average.
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The more distantly related two members of a family are, the fewer alleles they share in common.
Test your knowledge of genetic relatedness in families with this quiz. Explore the inheritance of alleles and the degree of genetic similarity between family members, from identical twins to more distantly related individuals.
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