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How Do Multiple Alleles Contribute to Inheritance Patterns Beyond Mendelian Genetics?

Multiple alleles play a big role in how traits are passed down from parents to kids. They let a single trait have more than two different forms. This creates a wide variety of appearances, known as phenotypes.

Here’s an example:

  • The ABO blood group system has three different alleles: IAI^A, IBI^B, and ii.

Because of these alleles, we have four different blood types: A, B, AB, and O.

Now, let’s talk about genotypic ratios.

These ratios are what we expect to see when we do a genetic cross with two traits. They can result in all sorts of different combinations, which increases the genetic diversity in a population.

This can become complex.

For example, simple patterns that Gregor Mendel studied, like 3:13:1 or 9:3:3:19:3:3:1, might not work in cases like polygenic inheritance. This type of inheritance shows traits that can change continuously, like the height of humans.

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How Do Multiple Alleles Contribute to Inheritance Patterns Beyond Mendelian Genetics?

Multiple alleles play a big role in how traits are passed down from parents to kids. They let a single trait have more than two different forms. This creates a wide variety of appearances, known as phenotypes.

Here’s an example:

  • The ABO blood group system has three different alleles: IAI^A, IBI^B, and ii.

Because of these alleles, we have four different blood types: A, B, AB, and O.

Now, let’s talk about genotypic ratios.

These ratios are what we expect to see when we do a genetic cross with two traits. They can result in all sorts of different combinations, which increases the genetic diversity in a population.

This can become complex.

For example, simple patterns that Gregor Mendel studied, like 3:13:1 or 9:3:3:19:3:3:1, might not work in cases like polygenic inheritance. This type of inheritance shows traits that can change continuously, like the height of humans.

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