Non-mendelian Genetics Flashcard

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What is non-Mendelian genetics?

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Non-Mendelian genetics refers to patterns of inheritance that do not follow Mendel's laws of inheritance, including incomplete dominance, codominance, and multiple alleles.

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What is a pedigree chart?

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A pedigree chart is a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors.

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What is codominance?

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Codominance is a form of inheritance where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

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What is incomplete dominance?

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Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two.

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What is the significance of X-linked inheritance?

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X-linked inheritance refers to genes located on the X chromosome, where males are more likely to express recessive traits due to having only one X chromosome.

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How do you determine the relationship between individuals in a pedigree?

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You can determine relationships by analyzing the connections and generations represented in the pedigree chart.

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What is the difference between dominant and recessive traits?

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Dominant traits are expressed in the phenotype even if only one allele is present, while recessive traits are expressed only when two copies of the allele are present.

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What is a phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

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What is a genotype?

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A genotype is the genetic constitution of an individual, specifically the alleles present at a particular gene locus.

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What is the role of the Y chromosome in inheritance?

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The Y chromosome is involved in determining male sex and carries genes that are not present on the X chromosome.