Genetics and Heredity

Front

What is the role of DNA in genetics?

Back

To store genetic information.

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What is a dominant trait?

Back

A dominant trait is a genetic trait that is expressed in the phenotype even when only one copy of the allele is present. For example, yellow pea seeds are a dominant trait.

Front

In genetics, what does the term 'genotype' refer to?

Back

The genotype refers to the genetic makeup of an organism, specifically the alleles it possesses.

Front

What is a Punnett Square used for?

Back

A Punnett Square is used to predict the genotypes of offspring from a genetic cross.

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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 Bb.

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What is a phenotype?

Back

The phenotype is the physical expression of the genetic material of an organism, such as hair color or height.

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What is heredity?

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Heredity is the passing of traits from parents to offspring through genes.

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What is the difference between dominant and recessive traits?

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Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.

Front

What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.

Front

What is the significance of the letter 'F' in genetics?

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The letter 'F' often represents the filial generation in genetics, such as F1 for the first generation of offspring.