Trait, The letters that represent the different parts of a gene., Allele, The different forms of a characteristic., Dominant, The trait that shows up and is expressed while hiding all the other traits. Uses Capital letters., Recessive, The trait that hides and is only expressed when 2 copies of the recessive trait are inherited together., Homozygous, The two alleles/letters for one trait that are the same. Ex: TT, or tt., Heterozygous, The two alleles/letters for one trait are different. Ex: Tt., Genotype, The combination of letters used to represent alleles. Ex: Dd, dd, DD, Phenotype, The physical appearance of a trait. Ex: blue eyes, dimples., DNA, Deoxyribonucleic acid; the molecule of life., Gene, A segment of DNA that contains instructions for how to make a protein., Complementary Base Pairing, How nucleotides bases pair together in DNA; A with T, G with C., Adenine, The nucleotide that pairs with Thymine., Thymine, The nucleotide that pairs with Adenine., Cytosine, The nucleotide that pairs with Guanine., Guanine, The nucleotide that pairs with Cytosine.

Genetics & Heredity Vocabulary

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