If a trait shows a continuous phenotypic expression (for example height in humans) this means that: that trait shows codominance hat trait is coded by multiple allelic genes that trait is coded by multiple non-allelic genes that trait shows epistasis
Added by Eva S.
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Step 1: Continuous phenotypic expression means that there is a range of phenotypes observed for the trait, rather than distinct categories. Show more…
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Ripujeet P.
If a person inherits two different alleles for a trait, they are said to be_______ for that trait. But, in order to express a ______ trait, individuals must inherit two copies of that allele. No matter what combination of alleles a person inherits, the expression of those genes determines an individuals' physical characteristics or____ . The choices are dominant, heterozygous, recessive, genotype phenotype, homozygous
Maitreya E.
Example 6: Testcross - An individual of unknown genotype is crossed with a homozygous recessive individual. This can be used to determine the genotype of any phenotype that is dominant. Genotypic Ratio: Phenotypic Ratio: Example 7: Incomplete Dominance - The F Generation will have a phenotype in between that of the parents. For example, red flowers (R) and white flowers (r) can make pink flowers (Rr). Genotypic Ratio: Phenotypic Ratio: Example 8: Codominance - When both alleles for a gene are expressed in heterozygous offspring. For example, red coat color (R) in horses is codominant with white coat color (R'). This makes a horse that shows a mix of red and white coat (RR'). Genotypic Ratio: Phenotypic Ratio:
Bryan V.
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