Page 2: Advanced Inheritance Patterns
This page delves into more complex inheritance patterns, including linked genes, codominance, and multiple alleles.
Definition: Linked genes are genes located close together on the same chromosome, which tend to be inherited together.
The page explains how to determine the number of possible gametes when genes are linked or independent. It also introduces the concept of codominance, where both alleles in a heterozygous pair are fully expressed.
Example: In the MN blood type system, individuals can have phenotypes M, N, or MN, demonstrating codominance.
Multiple alleles are discussed, using the example of coat color in rabbits. The page also covers incomplete dominance, where the heterozygous phenotype is intermediate between the two homozygous phenotypes.
Highlight: In incomplete dominance, a cross between two pink flowers RW would result in a ratio of 1 red RR : 2 pink RW : 1 white WW offspring.