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Genetic Inheritance (Genetic conditions (Dominant Genes (A defective gene…
Genetic Inheritance
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Physical traits
These include characteristics such as height, skin pigmentation and eye colour, which are all determined by genes
Because a child inherits genes from both mother and father, the way in which they are expressed depends on the interaction of these genes.
A child may inherit a gene for blue eyes from their mother and brown eyes from their father but they are likely to have brown eyes because the brown eye gene is dominant
Psychological traits
These include being skilled in mathematics, being creative, or being extrovert or introvert
A child may have a predisposition to be creative because of the genes they inherit but they would need a suitable environment for their creativity to be expressed
Inherited genes
Although the genes a child inherits from their parents determine certain traits and predispositions, other factors determine how they are shaped and expressed
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Abnormality of chromosomes: individuals with Down syndrome have an extra copy of chromosome 21. It causes characteristic facial features, growth delay and intellectual disability