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COMPLEX INHERITANCE

QuestionAnswer
What is incomplete dominance A blending of traits, where heterozygotes show an intermediate phenotype
What is codominance Both alleles are fully expressed in the phenotype
What are multiple alleles When a gene has more than two allele forms in a population , (blood type)
What is polygenic inheritance Traits controlled by more than one gene (eG: , height, skin color)
How does environment affect gene expression Environmental factors can influence how genes are expressed
What is epistasis One gene affects or masks the expression of another gene
Why do polygenic traits show continuous variation Because multiple genes contribute to a range of phenotypes
How is codominance different from incomplete dominance Codominance shows both traits; incomplete dominance blends them
Which inheritance pattern produces a 1:2:1 phenotypic ratio Incomplete dominance
What does polygenic mean Many genes control a single trait
What are examples of polygenic traits in humans Skin color, eye color, and height
What type of inheritance explains human blood type Multiple alleles and codominance
What environmental factors can influence traits Temperature, diet, sunlight, and chemicals
What is a pedigree A diagram showing genetic relationships and inheritance of traits across generations
What is a quantitative trait A measurable trait that shows continuous variation
What is the difference between genotype and phenotype in complex traits Genotype includes all genes; phenotype is affected by both genes and environment
Created by: pnetha
 

 



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