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Genetics

Published on Jan 28, 2016

Examples of non-Mendelian inheritance

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1.

Genetics

Beyond Mendel
Photo by emraps
2.

Some feathers are black, others white

Photo by thomas lieser (thomas-lieser.smugmug.com)
3.

Codominance

BOTH alleles are expressed simultaneously
Photo by thomas lieser (thomas-lieser.smugmug.com)
4.

Human height?

How can there be so much variation in
Photo by Jenn Durfey
5.

Polygenic trait

Partly because it's a
Photo by Jenn Durfey
6.

How do we get pink snapdragons?

Photo by AKMA
7.

Incomplete dominance

They are heterozygous for red and white
Photo by AKMA
8.

What would this look like

if the red and white alleles were codominant instead?
9.

Both traits would be expressed

10.

How is skin color determined?

Photo by getgln
11.

Many genes affect skin color

so it's another polygenic trait
12.

What's going on here?

13.

Multiple alleles
but only one gene. Each individual has two alleles, but there are seven alleles for clover leaf patterns

Diane Fisher