Human Inheritance-text pp 106-110 i) Dominance and recessive- ii) Co dominance – Human Blood groups Other Types of inheritance iii) Single Gene-Multiple alleles (Human Eye Colour) iv) Using Pedigrees v) Gender determination vi) Sex Linkage – X Linked
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Human Inheritance-text pp 106-110 i) Dominance and recessive- ii) Co dominance – Human Blood groups Other Types of inheritance iii) Single Gene-Multiple.
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Human Inheritance-text pp 106-110
i) Dominance and recessive-ii) Co dominance – Human Blood groupsOther Types of inheritance iii) Single Gene-Multiple alleles (Human Eye Colour)iv) Using Pedigreesv) Gender determinationvi) Sex Linkage – X Linked
i) Recessive trait
Dwarfism - dominant
• Dominant does not mean you will see lots of examples automatically in populations of individuals. It might be that it is a rare dominant form of a gene (allele) eg; dwarfism.
• The gene is said to have a low frequency in the human population
• Similarly recessive traits can be quite common in populations where the trait has a high frequency eg blue eyes in northern European populations eg; Danish, Swedish etc.