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Grade 9
Biology
Mendelian and non-Mendelian inheritance
Browse
Grade 9
Biology
Mendelian and non-Mendelian inheritance
Grade 9 Science

Mendelian and non-Mendelian inheritance

The main lesson, then each kind of problem it solves.

Mendelian and non-Mendelian inheritance

Main lesson
Expected genotypes among many offspring
Use this for “Among 100 children of carrier parents (Ff × Ff), how many are expected to be Ff?”
Incomplete dominance
Use this for “Two pink snapdragons are crossed. How many of 4 offspring are expected to be red, pink and white?”
Codominance
Use this for “A roan bull and a white cow: how many calves in 4 are roan?”
A sex-linked trait
Use this for “A carrier mother and a father with normal vision: what is the chance a son is color-blind?”
ABO blood types from genotypes
Use this for “Which two genotypes give the same blood type?”
A sex-linked pedigree
Use this for “Can an affected son have a mother who does not show the trait?”
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