Genetics- Monohybrid Punnett Squares

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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 for a particular gene.

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What does homozygous mean?

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Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

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What does heterozygous mean?

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Heterozygous refers to having two different alleles for a particular gene, such as Aa.

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What is a dominant allele?

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

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How are dominant alleles represented in genetic notation?

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Dominant alleles are represented by capital letters.

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How are recessive alleles represented in genetic notation?

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Recessive alleles are represented by lowercase letters.

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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 purpose of a monohybrid cross?

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A monohybrid cross examines the inheritance of a single trait, typically involving one gene with two alleles.