Monohybrid and Dihybrid Crosses

Front

What is a monohybrid cross?

Back

A monohybrid cross is a genetic cross that involves one trait, where two parents differ in a single characteristic.

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What is a dihybrid cross?

Back

A dihybrid cross is a genetic cross that involves two traits, where two parents differ in two characteristics.

Front

What does the term 'genotypic ratio' refer to?

Back

The genotypic ratio refers to the ratio of different genotypes that appear in the offspring from a genetic cross.

Front

What is the genotypic ratio for a monohybrid cross?

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The genotypic ratio for a monohybrid cross is typically 1:2:1.

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What is the phenotypic ratio for a monohybrid cross?

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The phenotypic ratio for a monohybrid cross is typically 3:1.

Front

What is the purpose of a Punnett square?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

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What does 'dominant' mean in genetics?

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Dominant refers to an allele that expresses its trait even when only one copy is present in the genotype.

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What does 'recessive' mean in genetics?

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Recessive refers to an allele that only expresses its trait when two copies are present in the genotype.

Front

How do you determine the probability of a specific trait appearing in offspring?

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The probability of a specific trait appearing in offspring can be determined using the ratios from a Punnett square.

Front

What is the significance of the F1 generation in genetics?

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The F1 generation is the first filial generation, which results from a cross between two parental (P) generations.