What are 2 examples of codominance?
Examples of codominance in animals include speckled chickens, which have alleles for both black and white feathers, and roan cattle, which express alleles for both red hair and white hair. Codominance is also seen in plants.
What is codominance in sickle cell anemia?
The altered form of hemoglobin that causes sickle-cell anemia is inherited as a codominant trait. Specifically, heterozygous (Ss) individuals express both normal and sickle hemoglobin, so they have a mixture of normal and sickle red blood cells.
Which causes are example of codominance?
Codominance is exemplified by a plant that bears flowers with two distinct color phenotypes. For instance, a white-spotted red flower could be caused by a cross between a red flower and a white flower. The alleles for the red and white color phenotypes mean that they are codominant.
How do you calculate codominance?
To calculate frequencies of the two codominant alleles, LM and LN, it should be kept in mind that these 6,129 persons possess a total of 6,129 x 2 = 12,258 genes. The number of LM alleles, for example, is 1,787 + 1,787 + 3,039. Thus, calculation of the frequency of LM and LN alleles is worked out in this way.
Which is the best example of codominance?
ABO blood group
The best example of codominance is ABO blood group. ABO blood grouping is controlled by gene I which has three alleles A, B, and O and show codominance. An O allele is recessive to both A and B. The A and B alleles are codominant with each other.
What is co dominance explain with one example?
Codominance is a heterozygous condition in which both alleles at a gene locus are fully expressed in the phenotype. Alleles which show an independent effect are called as Codominant alleles. In codominance, neither phenotype is completely dominant. The best example of codominance is ABO blood group.
Is sickle cell incomplete dominance or codominance?
incomplete dominance
Hence, Sickle cell anemia is an example of incomplete dominance since neither of the two alleles are completely dominant over the other and the heterozygote is an intermediate. A person who is homozygous dominant will have normal red blood cells.
Is sickle cell codominant or recessive?
Sickle cell disease is a hereditary disease seen most often among people of African ancestry. Caused by mutations in one of the genes that encode the hemoglobin protein, the disease is inherited as an autosomal recessive trait. The mutation causes the red blood cells to take on an unusual sickle shape.
How many phenotypes does co dominance have?
Two phenotypes
Two phenotypes are possible in codominance.