Mendel's Law of Dominance

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What is Mendel's Law of Dominance?

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Mendel's Law of Dominance states that in a heterozygote, one allele may conceal the presence of another allele for the same trait.

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What is a dominant trait?

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A dominant trait is a trait that is expressed in the phenotype even when only one allele for that trait is present.

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What is a recessive trait?

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A recessive trait is a trait that is only expressed in the phenotype when two alleles for that trait are present.

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What does it mean for a trait to be homozygous?

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

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What does it mean for a trait to be heterozygous?

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

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What is the phenotype?

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The 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 the genotype?

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The genotype is the genetic constitution of an individual, specifically the alleles present for a particular gene.

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What is an allele?

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An allele is a variant form of a gene that can produce different traits.

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What is the significance of dominant and recessive alleles in inheritance?

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Dominant alleles can mask the expression of recessive alleles, determining the phenotype of the organism.

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How can you identify a recessive trait in a breeding experiment?

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A recessive trait can be identified when it appears in the offspring of two heterozygous parents or when it appears in the phenotype of an individual with a homozygous recessive genotype.