5. Mendelian & Non-Mendelian Inheritance

Front

What is incomplete dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two traits.

Front

What is codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits equally.

Front

What is complete dominance?

Back

A form of inheritance where one allele completely masks the effect of another allele in a heterozygote.

Front

What is a Punnett square?

Back

A diagram used to predict the outcome of a particular cross or breeding experiment, showing the possible combinations of alleles.

Front

What is a monohybrid cross?

Back

A genetic cross between parents that differ in only one trait.

Front

What is the phenotypic ratio of a monohybrid cross between two heterozygous parents (Rr x Rr)?

Back

3:1, where 3 offspring show the dominant trait and 1 shows the recessive trait.

Front

What does it mean if a trait is dominant?

Back

A dominant trait is one that will appear in the phenotype even if only one allele is present.

Front

What does it mean if a trait is recessive?

Back

A recessive trait is one that will only appear in the phenotype if two copies of the allele are present.

Front

What is the significance of the F1 generation?

Back

The F1 generation is the first generation of offspring obtained from a cross of two parental (P) individuals.

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What is the significance of the F2 generation?

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The F2 generation is the second generation of offspring, produced by crossing two F1 individuals.