Download Activity #37- Genetics Vocab

Activity #48- Genetics Vocab
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Heredity
Genetics- The study of heredity
Gene
Dominant
Recessive
Allele
Genotype
Phenotype
Homozygous- genotypes with the same alleles; either 2 dominant or 2
recessive
Heterozygous- genotypes with different alleles; one dominant and one
recessive
Punnett Square
Activity #48- Genetics Vocab
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Heredity- The passing on of traits from parent to offspring
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Genetics- The study of heredity
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Gene- Units of heredity; segments of DNA on chromosomes
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Dominant- A trait that is shown when at least 1 dominant allele is present , represented by
a capital letter (ex. B)“stronger trait”
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Recessive- A trait that is only shown if 2 recessive alleles are inherited , represented by a
lower case letter (ex. b) “weaker trait”
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Allele- different forms of the same gene; represented by a letter (“B” or “b”)
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Genotype- Gene makeup of an organism (RR, Rr, or rr)
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Phenotype- Physical appearance (brown hair, green eyes)
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Homozygous- genotypes with the same alleles; either 2 dominant or 2 recessive
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Heterozygous- genotypes with different alleles; one dominant and one recessive
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Punnett Square- a tool to predict the probability of inheriting traits