What is the product of cross between a black and a white chicken?
In some varieties of chickens, the allele for black feathers is codominant with the allele for white feathers. A cross between a black chicken and a white chicken will result in chicken with both black and white feathers.
What is the phenotype of an offspring of black and white chicken?
In some chickens, the gene for feather color is controlled by codominance. The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette (black and white spotted).
What would happen if we cross a white chicken to a black chicken?
On mating a black chicken with white chicken, the offsprings will inherit B allele from black parent and W allele from white parent. The color of feathers will be black and white as both alleles express in the phenotype and neiter of tese two alleles is able to dominate over the other.
How do you test for Codominance?
In codominance, both alleles are completely expressed. If you crossed a red flower with a white one and the alleles were codominant, you might get flowers that are red and white in patches. If the alleles were incompletely dominant, the flowers would be pink because the traits blend.
What is Codominance trait?
Codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously.
What is the difference between Codominance?
Codominance and Incomplete dominance are two types of genetic inheritance….
| Difference Between Codominance and Incomplete dominance | |
|---|---|
| Codominance | Incomplete Dominance |
| The two alleles neither act as dominant or recessive over the other | One allele is not completely dominant over the other |
| Effect | |
What are the 3 non Mendelian inheritance?
Such modes of inheritance are called non-Mendelian inheritance, and they include inheritance of multiple allele traits, traits with codominance or incomplete dominance, and polygenic traits, among others, all of which are described below.
What is an example of incomplete dominance?
An Andalusian chicken (found in Spain) is an example of incomplete dominance. An offspring produced shows incomplete dominance in its feathers as the parents (a white feathered male and a black feathered female chicken) breeds to produce an offspring with blue and tinged feathers.
What is the difference between Codominance and dominance?
The key difference between dominance and codominance is that dominance is the masking effect of one allele over the other allele when the gene is in heterozygous state while the codominance is expressing the effects of both alleles independently without blending in heterozygous state.
How do you know if its Codominance or incomplete dominance?
Incomplete dominance is when the phenotypes of the two parents blend together to create a new phenotype for their offspring. An example is a white flower and a red flower producing pink flowers. Codominance is when the two parent phenotypes are expressed together in the offspring.
How do you know if Codominance is incomplete dominance?
In complete dominance, only one allele in the genotype is seen in the phenotype. In codominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.
What is difference between Codominance and incomplete dominance?
Incomplete dominance and codominance are different from one another . In codominance, both the alleles present on a gene are expressed in the phenotype. In incomplete dominance, the F2 generation from heterozygous plants will have a ratio of 1:2:1 with the phenotypes red, white and spotted flowers.
What causes incomplete dominance?
Incomplete dominance can occur because neither of the two alleles is fully dominant over the other, or because the dominant allele does not fully dominate the recessive allele. This results in a phenotype that is different from both the dominant and recessive alleles, and appears to be a mixture of both.
How do you do complete dominance?
Complete dominance is a form of dominance in heterozygous condition wherein the allele that is regarded as dominant completely masks the effect of the allele that is recessive. For instance, an individual carrying two alleles that are both dominant (e.g. AA), the trait that they represent will be expressed.