Module 6 Lesson 3 - 1
Completion requirements
Lesson 3 — Incomplete Dominance, Codominance, and Multiple Alleles
Get Focused
© Getty Images
Life is rarely black and white or, in the case of flowers, red and white! Instead, many physical characteristics observed in plants or in people have various phenotypes. There are certainly more than the two that can be accounted for by Mendel's dominant
and recessive inheritance pattern.
Although the study of genetics can become more complex very quickly, there are two ways we can add some variety and still use Mendel's simple laws to explain them.
Staying with monohybrid crosses, this lesson considers multiple alleles and incomplete dominance. By examining these two new inheritance patterns, you can explain more of the variety you see around you.
Although the study of genetics can become more complex very quickly, there are two ways we can add some variety and still use Mendel's simple laws to explain them.
Staying with monohybrid crosses, this lesson considers multiple alleles and incomplete dominance. By examining these two new inheritance patterns, you can explain more of the variety you see around you.
In this lesson, you will explore traits that do not follow Mendel's patterns of simple dominance, but they can be explained by his laws. You will learn how genes can have more than two alternate forms.
In this lesson, the focusing questions are the following:
-
What happens when one allele is not completely dominant over another?
- How does having more than two alleles for a gene affect the possible phenotypes for a trait?