Mendelian Genetics

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What is Mendelian Genetics?

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Mendelian Genetics is the study of how traits are inherited through the interactions of alleles, based on the principles established by Gregor Mendel.

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What is a dominant allele?

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A dominant allele is an allele that expresses its trait even in the presence of a recessive allele.

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What is a recessive allele?

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A recessive allele is an allele that only expresses its trait when two copies are present (homozygous recessive).

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What does homozygous mean?

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Homozygous refers to having two identical alleles for a particular gene (e.g., GG or gg).

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What does heterozygous mean?

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Heterozygous refers to having two different alleles for a particular gene (e.g., Gg).

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What is codominance?

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Codominance is a genetic scenario where both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

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What is incomplete dominance?

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Incomplete dominance is a genetic scenario where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

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What is a phenotype?

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A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

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What is a genotype?

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A genotype is the genetic constitution of an individual, representing the alleles inherited from its parents.

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What is a Punnett square?

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A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.