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The gene that is fully expressed when two different alleles are present is the?
Wiki User
∙ 12y ago
Dominant alleles :) hope i helped
Wiki User
∙ 12y ago
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What are inactive alleles?
Inactive alleles (usually called recessive) are not fully expressed in the phenotype of the organism.
What Dominant alleles are both fully expressed in a phenotype?
The form of inheritance in which two (different) alleles are both expressed is called codominance. An example of codominance is the orange and black coat of a type of calico cat called a tortoiseshell. Both the orange allele and the black allele for coat color are expressed.
What is the difference between polygenic inheritance and incomplete dominance?
Codominance and incomplete dominance are the same in that they both apply to a heterozygote (an organism with two different alleles for one trait).The difference is in how the two different alleles are expressed in the phenotype, or appearance, of the organism.In codominance, you can see the effect of both alleles distinctly. A person who has one allele for type A blood and one allele for type B blood will have type AB blood. You can see the effects of both the A and the B allele, but they remain distinct from each other.In incomplete dominance, the effect of the two alleles is more blended, as if neither allele can completely overpower the other. In some flowers, plants with two alleles for white color are white, and plants with two alleles for red color are red, but a heterozygote with one allele for red and one for white is pink. (Not red and white as you'd see with codominance.)
What is the difference between a homozygous individual and a heterozygous individual?
In genetics, homozygous genes are identical alleles, while heterozygous genes have different alleles. For example, TT(same alleles) is homozygous genotype, while Tt (different alleles) is a heterozygous genotype.
Describes the allele that is fully expressed when carried by only one of a pair of homologous chromosomes?
ecodominance
What are inactive alleles?
Inactive alleles (usually called recessive) are not fully expressed in the phenotype of the organism.
What Dominant alleles are both fully expressed in a phenotype?
The form of inheritance in which two (different) alleles are both expressed is called codominance. An example of codominance is the orange and black coat of a type of calico cat called a tortoiseshell. Both the orange allele and the black allele for coat color are expressed.
How are homozygous and heterozygous allele combinations for a particular trait in plants different?
A homozygous trait is expressed when 2 of the same alleles make up the genotype. For example, if two alleles (A and a) were present, the homozygous trait would be either AA or aa. In general, a fully recessive trait is only expressed when it's homozygous.
When the heterozygous genotype results in a phenotype where both alleles are fully and separated expressed?
codominance.
What is a condition in which both alleles for a gene are fully expressed?
both the alleles are expressed when the alleles are co-dominent, which means neither is dominant or recessive and cannot be masked. SOme examples are blood type. Type AB blood type is one co-dominent allele for a (Ia) and one for b (Ib).
Using the terms dominant recessive explain the difference between genotype and phenotype?
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
Is this true or false in codominance the alleles are neither dominant nor recessive?
True - in codominance neither allele is dominant or recessive. Codominance results in both alleles being expressed in the phenotype (characteristics of the organism). For example, if R is red and W is white - a flower with the genotype RW would have white petals with red patches (or something similar).
When two alternative alleles are fully apparent in the offspring?
Dominance
Which statement is TRUE about multiple alleles?
MULTIPLE CHOICES a. It happens when two or more alleles control the inheritance of a character. b. It refers to traits that are controlled by genes located on the same-sex chromosomes. c. It occurs when two dominant alleles of a contrasting pair are fully expressed at the same time in a heterozygous individual. d. It occurs when the phenotype of the offspring is somewhere in between the phenotype of both parents.
What does co-dominant means?
Co-dominance happens when two genotypes are expressed at the same time. For example, one parent can have blood type A and one parent can have blood type B and together produce a child with blood type AB. If two parents have the blood type AB, the child has a chance of being mentally ill.
The outward expression of a gene?
The outward expression of a gene is determined by the alleles. Alleles come and pairs, and the pairings can be heterozygous or homozygous. For homozygous (both alleles are the same) phenotypes, the trait you see is the same as the alleles. For example, if both alleles are for a white flower, the flower will be white. There are different outcomes for heterozygous (one dominant allele, the other recessive) phenotypes. In complete dominance (the most common), the dominant allele is the the trait you see. For example, the flower has an allele for red (dominant) and white (recessive), it will be red because red is dominant to white. In incomplete dominance, the dominant allele is not strong enough to fully cut out the recessive so trait will be a mix of both. In the flower's case, it would be pink because white will be seen through the red. In codominance, both alleles are expressed just on different areas. The flower would have both red and white splotches.
Where both traits are fully expressed?
Codominace
