Which genotypes are possible for an agouti rabbit?
All wild rabbits have a Chestnut Agouti coat, meaning their genotypes are “A__ B__ C__ D__ E__.” These are the most common genes. The most recessive gene is the “e” gene. This gene shows little of the dark color, if at all. The colors that show are reddish yellow colors.
What is genotype on a rabbit pedigree?
Genotypes are a series of letters that represent the genes that color the fur of a rabbit. There are 5 main loci that every rabbit has: A, B, C, D, & E. A rabbit will receive two genes for each category from its parents, creating the color and genotype of your rabbit.
What is the genotype of the brown rabbit?
The B gene has two alleles: B and b. The B allele is considered the wild-type allele: it codes for black color. The b allele codes for chocolate (brown) color base. Assuming the rest of a rabbit’s coat color genes indicate a solid, dark color phenotype and that rabbit has genotype BB at the B gene, it will be black.
What colour is a rabbit with the genotype CHCH?
1. Multiple alleles control the coat color or rabbits. A gray color is produced by a dominant allele C. The Cch allele produces a silver-gray color when present in the homozygous condition, ChCch, called chinchilla.
How many genotypes are possible for coat colour in rabbits?
In the case of coat color in rabbits, there are four alleles, and each one is expressed with a different phenotype.
What is the genotype of the female rabbit?
genotype ggBb
A female rabbit has the genotype ggBb.
What is the phenotype of a heterozygous rabbit?
Two heterozygous white (brown fur is recessive) rabbits are crossed. The parents’ genotypes are BB and Bb. The offspring’s genotypes are 50% BB, 50% Bb, which means their phenotypes are 100% brown.
What is the genotype of albino rabbit?
genotype bb
The albino rabbit (genotype bb) produces gametes (eggs or sperms, depending on its sex) containing only the allele b.
What is the genotype of spotted bunny?
ff genotype
How did you know? You’re told that solid-colored fur is dominant to spotted. That means that any rabbit that does have spots must have the ff genotype.
Which rabbits are homozygous for coat colour?
There can be three conditions for a coat colour: homozygous black coat colour, heterozygous black coat colour, and homozygous white colour. When the cross between a heterozygous rabbit and a white rabbit is carried out the resulting phenotype ratio will be 1:1.
What does the agouti gene do?
The agouti gene controls the distribution of black pigment, and determines whether a horse will have a bay or black base coat color. Phenotype: The agouti gene controls the distribution of black pigment, and determines whether a horse will have a bay or black base coat color.
What does the agouti gene control?
The Agouti gene in mice controls hair color and is under the control of a developmentally regulated hair cycle-specific promoter in exon 2. As a result, the gene switched ON at a specific time during hair follicle cell development to produce an agouti coat with a yellow stripe in otherwise dark hair [162].
How many species of agouti are there?
12 known
Species Description Agoutis are rodents in the genus Dasyprocta, which consists of 12 known species found throughout Central and South America. These small mammals may grow up to 2.5 feet long and weigh up to 13 pounds [1].
What will the genotype be for a rabbit that homozygous recessive?
Bb
According to the law of dominance, a trait is represented by two contrasting factors of a gene in a heterozygous individual while the homozygous individual carries two copies of same factors. Thus, the genotype of heterozygous rabbit will be Bb and that of homozygous recessive will be bb.
What is the genotype of gray bunny?
Directions: In rabbits, gray hair (G) is dominant to white hair (g), and black eyes (B) are dominant to red eyes (b). These two traits are independent of each other. In other words, a female rabbit with the genotype GgBb may produce eggs with the alleles GB, Gb, gB, or gb.
What are some examples of agouti rabbits?
Some examples of agouti rabbits are Chestnut, Opal, Chocolate Agouti, Orange, Chinchilla, or Frosty. Note: some genes can “override” the agouti gene which can take the ticking/rings out of the fur. This will be discussed later on when we get to those genes.
What is agouti gene in rabbits?
Agouti is the dominant gene. This means if a rabbit has the agouti gene it will be evident in its coat colouring. Self rabbits do not carry the agouti gene. Ruby Eyed White rabbits may carry the agouti gene but the albino gene masks it.
What are the different rabbit genotypes?
There are five groups of genes commonly used in rabbit Genotypes, called loci, and they are as follows in order of most dominant to least dominant (recessive), with some common examples of colors displaying after the hyphens: A – Agouti locus – “A” (Agouti) or “at” (Tan Pattern, such as Otters) or “a” (Self – solid colors).
Will my baby rabbit be agouti?
If you have only self rabbits (black, blue, chocolate, or lilac) bunnies you will not be able to get any of the agouti colours in your babies, because agouti is the dominant gene. Self rabbits do carry and do not pass it on to their offspring.