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If a horse is homozygous dominant EE, he is black. Homozygous recessive ee, he is red. A black EE horse that is homozygous dominant for the Agouti gene (AA) will be a bay horse. If that same EE black were homozygous recessive for aa, then he would still appear all black. The Agouti gene does not effect a red ee horse's phenotype.
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Can a horse that is sabino carrying a tobiano gene produce a foal that is homozygous tobiano?
If the horse is bred to another horse with at least one tobiano gene, it is possible the foal may be homozygous tobiano.
Can a horse with that is sobiano carrying a tobiano gene produce a foal that is homozygous tobiano?
Yes, a horse with tobiano and sabino genetics can produce a homozygous tobiano foal - when bred to another horse with at least one tobiano gene.
If a horse is homozygous what does that mean?
A horse is homozygous when it carries two identical copies of a specific gene, one inherited from each parent. This means that the horse will pass on that specific gene to all its offspring, as there is no variation in the gene.
What are the two base color genes for horse?
The base color is black/red factors, controlled by the Extension gene. A horse with one or two copies of the Extension gene (Ee or EE) will have black factors. A horse with no copies of the Extension gene (ee) will be chestnut.The Agouti gene acts on the Extension gene by limiting where the black factors are displayed, into points such as the legs, mane, tail, muzzle, and ears. A horse with at least one copy of the Extension gene that doesn't not have a copy of the Agouti gene will be black, provided that no other gene modify the color. One or two copies of the Agouti gene in combination with the Extension gene will result in a bay horse. A chestnut horse (no copies of the Extension gene) can have copies of the Agouti gene, but it will not affect the horse's color, as the horse has no black factors for the Agouti gene to limit.
If a black horse and a blackhorse bred together what colour would the foal be?
There are a couple possibilities, depending on the genetic makeup of the horses. First, a few definitions: homozygous for black means the horse has two genes for the color black. This horse can only pass on a black gene. Heterozygous for black - the horse has one gene for black, and one for chestnut. Either one can be passed on. The horse will appear black, though can produce chestnut foals. If they are both homozygous for black the foal will be black, and will be homozygous for black. If one of them is homozygous and the other heterozygous, you will always have a black foal, but there is a 50/50 chance of being homozygous for black. If both of them are heterozygous, you have a 25% chance of getting a chestnut, 50% chance of getting a heterozygous black, and 25% change of a homozygous black.
Is it true or false homozygous organisms are true-breeding for a particular trait?
True for the most part, if you breed two homozygous animals then it's a 50/50 chance of the offspring breeding true to one parent. If you breed a Homozygous animal and a heterozygous animal then the homozygous animal will breed true at least 90% of the time.
What type of gene has Identical alleles?
A homozygous gene has identical alleles. Homozygous means the individual has two copies of the same allele for a particular gene.
Where did buckskin come from?
If you mean Buckskin the horse color, then it came about through the cream dilution gene acting on a bay or black horse. The cream gene affects the body color of the horse giving it a 'washed out' appearance. In the single form cream will not typically affect the black coloring on a bay horse leaving the points dark, but will dilute the body color. In it's double form Cream will usually affect the black points as well.
An individual with two identical alleles of a gene is?
An organism that has two identical alleles for a trait is known as a homozygote or a homozygous organism.
Is homozygous dominant a geneotype or phenotype?
homozygous dominant is the genotype. hypothetically, if the gene was for the color purple in a flower, the phenotype would be purple, while the genotype would be homozygous dominant AKA Pp.
If you breed a chestnut mare to a homozygous black stallion the resulting foal will be?
It depends on the other genetics that help determine color. If there are only chestnut and black, then the foal will be black. If there is an agouti gene to restrict the black to the horse's points, the foal will be a bay. If there are additional modifiers, the horse may have other attributes such as spots, dun stripes, etc. A chestnut of any kind cannot result from this mating, as this requires 2 chestnut genes, and a homozygous black carries no chestnut genes to pass along. the chestnut color is the most recessive gene, so all other colors will be dominant, but truthfully all colors come from an alteration or absence of a red or black gene. a homozygous black has two copies of the black gene, and will pass on one of them, the other gene will be chestnut, so the result will be bay, (red with black mane and tail) or brown (liver) or a black. A homozygous black is not possible. A good source to read about this matter is "Horse color explained" by Jeanette Gower.
What is a sentence with homozygous?
The pair of alleles were homologous because they were the same.
