It means that the organism will breed true - in other words, the offspring will resemble the parents.
a brown horse i just did this in school a few weeks ago
Well considering that chestnut is recessive the foal most likely would be black, although it could be possible to get a bay foal.
Homozygous Homozygous
Homozygous
Heterozygous is to different alleles and homozygous is having the same alleles.
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.
If the horse is bred to another horse with at least one tobiano gene, it is possible the foal may be 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.
50% phenotypic... but it depends on what u mean by Rr homozygous
a brown horse i just did this in school a few weeks ago
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.
Homozygous
Homozygous dominant would be all Capital letters. Homozygous recessive would be all lower case letters. So...in basic color genetics for horses: A homozygous recessive horse would be aaee A homozygous dominant horse would be AAEE
Well considering that chestnut is recessive the foal most likely would be black, although it could be possible to get a bay foal.
homozygous
a horse
Homozygous Homozygous