12/5 Bell ringer

Front

Genotype

Back

the genetic makeup of an organism

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Phenotype

Back

the physical appearance of an organism

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Heredity

Back

the passage of genetic material from parents to offspring

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Punnett square

Back

a diagram that shows the possible offspring of two parents

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Allele

Back

a segment of DNA that determines or helps to determine a trait

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Dominant allele

Back

an allele that expresses its trait even in the presence of a recessive allele

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Recessive allele

Back

an allele that expresses its trait only when two copies are present

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Homozygous

Back

having two identical alleles for a particular gene

Front

Heterozygous

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having two different alleles for a particular gene

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Genetic variation

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the diversity in gene frequencies within a population