LS.10b-Heredity

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

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What is a genotype?

Back

A genotype is the genetic makeup of an organism, consisting of the alleles inherited from its parents.

Front

What does heterozygous mean?

Back

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

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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 is a dominant trait?

Back

A dominant trait is a characteristic that is expressed in the phenotype even when only one allele is present.

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What is a recessive trait?

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A recessive trait is a characteristic that is expressed in the phenotype only when two copies of the allele are present.

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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 relationship between genes and traits?

Back

Genes are segments of DNA that code for specific traits, which are the observable characteristics of an organism.

Front

What is the purpose of a Punnett square?

Back

A Punnett square is a tool used to predict the genetic outcomes of a cross between two organisms.

Front

What is the difference between phenotype and genotype?

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Phenotype refers to the observable traits, while genotype refers to the genetic makeup that determines those traits.