Mendelian Genetics Practice

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What is Mendelian Genetics?

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

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What is a genotype?

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A genotype is the genetic makeup of an organism, represented by the alleles it possesses (e.g., BB, Bb, bb).

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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 and environment.

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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., BB or bb).

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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., Bb).

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What is a dominant allele?

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A dominant allele is an allele that expresses its trait even when only one copy is present in the genotype.

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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 in the genotype.

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What is a Punnett square?

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A Punnett square is a diagram used to predict the genotypes of offspring from a genetic cross.

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What is the expected phenotypic ratio in a monohybrid cross?

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The expected phenotypic ratio in a monohybrid cross is typically 3:1 for dominant to recessive traits.

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What is the expected genotypic ratio in a monohybrid cross?

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The expected genotypic ratio in a monohybrid cross is typically 1:2:1 for homozygous dominant, heterozygous, and homozygous recessive genotypes.