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Unformatted text preview: different from either homozygous form. This is sometimes referred to as an intermediate phenotype. There are a number of variations in lack of dominance, but each results in heterozygous conditions that have a phenotype different from either homozygous phenotype. In other words, when a gene lacks dominance, there will be three different phenotypes, two homozygous phenotypes (AA and A'A') and a third heterozygous phenotype (AA'). A . Incomplete Dominance Failure to completely mask or cover the recessive allele The heterozygote first generation has some intermediate phenotype between the two homozygous forms, often appearing as a blending of the two alleles. Examples: snapdragon flowers and human hair texture...
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10