connective tissue, collagen, connective tissue phenotype @ Pixabay

An individual who expresses a recessive phenotype must have what genotype? This is not as easy of a question to answer as you might think. The genotype depends on the genetic model being used. For example, in Mendelian genetics, an individual with the recessive phenotype could be homozygous or heterozygous for that trait. In the case of a recessive disorder, it is possible to have two individuals carrying one copy of the gene for that disease. One might be healthy with what genotype? The other could show signs and symptoms of the disease if they are homozygous for their genes. If both parents carry this trait, then there is an increased chance that any children will inherit this genetic defect from them. It isn’t always easy to determine which genotypes would display a certain phenotype because different models exist; however, in most cases you can find out by looking at family trees or medical records how often somebody has shown phenotypical expression before making assumptions about inheritance patterns. For example: In Mendelian genetics–inheritance pattern using


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