11.1 MONOHYBRID INHERITANCE

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What is a dominant trait?

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A dominant trait is expressed when both alleles are dominant alleles or one dominant allele is paired with a recessive allele.

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What is an allele?

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An allele is an alternative form of a gene for a specific trait that is located on the same locus of a pair of homologous chromosomes.

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What is a trait?

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A trait is a heritable feature such as height, eye color, blood group, and presence of dimples.

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What is a recessive allele?

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A recessive allele is an allele that shows its trait only when both alleles are recessive.

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What is a recessive trait?

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A recessive trait is expressed if a recessive allele is paired with another recessive allele.

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What is a gene?

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A gene is a segment of DNA that contains the instructions for building a specific protein, which influences a trait.

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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 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 for a particular gene.

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What is homozygous?

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Homozygous refers to having two identical alleles for a particular gene.

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What is heterozygous?

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Heterozygous refers to having two different alleles for a particular gene.