Genetics and punnett squares

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses, such as BB, Bb, or bb.

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What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype and environment.

Front

What does homozygous mean?

Back

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

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What does heterozygous mean?

Back

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

Front

What is 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 from the parents.

Front

What is the purpose of a Punnett square?

Back

The purpose of a Punnett square is to determine the probability of an offspring inheriting particular traits based on the genotypes of the parents.

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What is an allele?

Back

An allele is a variant form of a gene that can produce different traits, such as brown or blue eyes.

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What is the difference between dominant and recessive alleles?

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A dominant allele is expressed in the phenotype even if only one copy is present, while a recessive allele is only expressed if two copies are present.

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What is the genotype of a homozygous dominant individual?

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The genotype of a homozygous dominant individual is represented as 'AA'.

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What is the genotype of a homozygous recessive individual?

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The genotype of a homozygous recessive individual is represented as 'aa'.