Recessive gene: Difference between revisions
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A recessive gene is a [[Gene|gene]] that can only be displayed in the [[ | A recessive gene is a [[Gene|gene]] that can only be displayed in the [[Phenotype|phenotype]] when the individual is [[Homozygous|homozygous]] recessive. This means that the individual carries two identical copies of the same [[Gene|gene]], which code for the same [[Phenotype|phenotype]]. If a [[Heterozygous|heterozygous]] individual were present, the recessive [[Gene|gene]] would not be displayed in the individual's [[Phenotype|phenotype]] and instead the dominant gene would be displayed. If heterozygous individual carrying the recessive gene were to reproduce with another individual heterozygous for the same [[Gene|gene]], there would be a 25% chance of producing a [[Homozygous recessive|homozygous recessive]] progeny; which would display the trait.<br>Examples of recessive genes are blue eye colour, which is recessive to brown eye colour: Bb, and wrinkled phenotype of garden peas, which is recessive to its non-wrinkled counterpart. | ||
Revision as of 11:56, 22 November 2010
A recessive gene is a gene that can only be displayed in the phenotype when the individual is homozygous recessive. This means that the individual carries two identical copies of the same gene, which code for the same phenotype. If a heterozygous individual were present, the recessive gene would not be displayed in the individual's phenotype and instead the dominant gene would be displayed. If heterozygous individual carrying the recessive gene were to reproduce with another individual heterozygous for the same gene, there would be a 25% chance of producing a homozygous recessive progeny; which would display the trait.
Examples of recessive genes are blue eye colour, which is recessive to brown eye colour: Bb, and wrinkled phenotype of garden peas, which is recessive to its non-wrinkled counterpart.