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Apologia Biology

Module 8: Mendelian Genetics

QuestionAnswer
True breeding If an organism has a certain characteristic that is always passed on to its offspring, we say that this organism bred true with respect to that characteristic
Allele One of a pair of genes that occupies the same position on homologous chromosomes
Genotype Two-letter set that represents the alleles an organism possesses for a certain trait
Phenotype The observable expression of an organism's genes
Homozygous genotype A genotype in which both alleles are identical
Heterozygous genotype A genotype with two different alleles
Dominant allele An allele that will determine phenotype if just one is present in the genotype
Recessive allele An allele that will not determine the phenotype unless the genotype is homozygous in that allele
Pedigree A diagram that follows a particular phenotype through several generations
Created by: Makenshi
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