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Three. Each homozygous genotype will have one phenotype each, and the heterozygote will have a third. Unlike incomplete dominance, where the heterozygote's phenotype is a blending of the two homozygous ones (i.e. crossing homozygous red and homozygous white snapdragons results in pink heterozygotes), codominance means the phenotype for each allele is seen in the heterozygote. An example can be seen in the Andalusian fowl. The two homozygotes have black and white plumage respectively, but heterozygotes appear blue, due to the presence of a fine mosaic of black and white areas (no blending).
What else can I help you with?
How many different phenotypes can be produced from intercrossing parents of genotype AaB1B2?
Four different phenotypes can be produced: AABB, AABb, AaBB, and AaBb. This is the result of different combinations of alleles from each parent in the offspring.
Do codominant alleles assort independently?
Yes, codominant alleles assort independently during Mendelian inheritance. This means that the inheritance of one pair of alleles does not influence the inheritance of another pair of alleles on different chromosomes. Each allele segregates independently into gametes during meiosis.
Why can multiple alleles result in many different phenotypes for a trait?
Multiple alleles can result in many different phenotypes for a trait because each allele codes for a different version of a gene, leading to a variety of possible combinations and expressions of traits in an individual.
What is codominant genotype?
When two alleles are codominant, that means that they are expressed simultaneously in different parts. For example, if a red and white flower were crossed, and the resulting flower had some red petals and some white petals that would be codominance. Another example is when animals have stripes and spots. Not to be confused in incomplete dominance, which is when two alleles are expressed simultaneously in the same part of the organism (in the flower example all the petals would be pink).
Why can multiple alleles provide many different phenotypes for a trait?
Multiple alleles can provide many different phenotypes for a trait because each allele can code for a different version of a trait, leading to a wide range of possible combinations and variations in the expression of that trait.
How many different phenotypes can be produced by a pair codominant alleles?
2
How many different phenotypes can be produced from intercrossing parents of genotype AaB1B2?
Four different phenotypes can be produced: AABB, AABb, AaBB, and AaBb. This is the result of different combinations of alleles from each parent in the offspring.
What will a heterozygote show when two alleles are codominant?
A heterozygote will show both phenotypes. For example, a tortoiseshell colored cat is heterozygous for black and orange coat color and it has both black and orange hairs in its coat. Refer to the following link for an illustration: http://www.great-pictures-of-cats.com/tortoiseshell-cats.html
Is it impossible for two alleles to produce four phenotypes?
This would depend upon how they are expressed. Are we talking dominant, codominant, or recessive? Then there are genes thought to be fine tuned by environmental factors.
A codominant trait with 3 alleles X Y Z how many possible phenotypes are there?
There are 6 possible phenotypes: X, Y, Z, XY, XZ, and YZ. Each allele can combine with another to produce a unique phenotype.
How are codominant alleles and incompletely dominant similar?
Codominance and incomplete dominance can only exist if the genotype has heterozygous alleles.
Do codominant alleles assort independently?
Yes, codominant alleles assort independently during Mendelian inheritance. This means that the inheritance of one pair of alleles does not influence the inheritance of another pair of alleles on different chromosomes. Each allele segregates independently into gametes during meiosis.
Why can multiple alleles result in many different phenotypes for a trait?
Multiple alleles can result in many different phenotypes for a trait because each allele codes for a different version of a gene, leading to a variety of possible combinations and expressions of traits in an individual.
Why can multiple alleles provide many different phenotypes for a trait?
Multiple alleles can provide many different phenotypes for a trait because each allele can code for a different version of a trait, leading to a wide range of possible combinations and variations in the expression of that trait.
What is codominant genotype?
When two alleles are codominant, that means that they are expressed simultaneously in different parts. For example, if a red and white flower were crossed, and the resulting flower had some red petals and some white petals that would be codominance. Another example is when animals have stripes and spots. Not to be confused in incomplete dominance, which is when two alleles are expressed simultaneously in the same part of the organism (in the flower example all the petals would be pink).
What causes a wide range of phenotypes for some traits?
Some traits, such as eye color and hair color, have multiple alleles that control different aspects of the phenotype. Because there are multiple different possible combinations of alleles, you get a wide range of phenotypes.
Blood type in humans is controlled by which alleles?
Human blood type is determined by codominant alleles.
