What is the homozygous dominant phenotype?
While carriers have the dominant/recessive genotype for a given gene, they only show the phenotype caused by the dominant version of that gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele.
What Colour is a rabbit with the genotype CC?
An example of multiple alleles is coat color in rabbits (Figure 1). Here, four alleles exist for the c gene. The wild-type version, C +C+, is expressed as brown fur. The chinchilla phenotype, cchc ch, is expressed as black-tipped white fur.
What is homozygous condition?
Homozygous Homozygous is a genetic condition where an individual inherits the same alleles for a particular gene from both parents.
What is the phenotype of a heterozygous rabbit?
A heterozygous white rabbit is crossed with a homozygous brown rabbit. The parents’ genotypes are Rr and Rr. The offspring’s genotypes are 25% RR, 50% Rr, and 25% rr, which means their phenotypes are 75% red and 25% white.
What letters are homozygous dominant?
A homozygous trait is referred to by two capital letters (XX) for a dominant trait, and two lowercase letters (xx) for a recessive trait.
Why is homozygosity a problem?
Having a high homozygosity rate is problematic for a population because it will unmask recessive deleterious alleles generated by mutations, reduce heterozygote advantage, and it is detrimental to the survival of small, endangered animal populations.
What is the rarest rabbit color?
American Blue Rabbit
American Blue Rabbit It is unique to North America and has become the rarest rabbit breed in the United States. A man in California created the American Blue by breeding Blue Flemish Giants, Blue Beveren, and the now extinct Blue Viennas and Blue Imperials.
Why is my white bunny turning GREY?
In the winter, as the days grow shorter, less melanin is produced. This, in turn, means that a rabbit’s new coat will lack pigmentation. In snowy climes, it’s quite common for a rabbit’s fur to turn completely white.
What is an example of homozygous?
Homozygous examples You can have brown eyes whether you’re homozygous (two alleles for brown eyes) or heterozygous (one for brown and one for blue). This is unlike the allele for blue eyes, which is recessive. You need two identical blue eye alleles in order to have blue eyes.
What are the genotypes of a homozygous and a heterozygous tall pea plant?
This makes the inheritance easy to observe and follow. What are the genotypes of a homozygous and a heterozygous tall pea plant? DD is homozygous dominant, gives phenotype tall. Dd is heterozygous, also gives the phenotype tall.
What are the heterozygous genotypes?
(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
What kind of dental problems do rabbits have?
Signs and symptoms of changing eating habits, teeth and dental issues, and face and jaw swelling will all contribute to a prognosis of the kind of dental issue affecting the rabbit, be that of an abscess, overgrown incisors and cheek teeth, or severe root issues that may involve the jaw or nasal cavities.
Why does my rabbit have an abscess on his tooth?
Most tooth problems in rabbits can be attributed to malocclusion, or the overgrowth of teeth, and abscesses in the teeth and mouth tissues. Symptoms of a dental issue include: Malocclusion occurs when the teeth are misaligned and therefore cannot be ground down naturally.
Why do Rabbits have incisors and molars?
The incisors are used for snipping off pieces of grass, hay and other plants before passing food backwards to the molars for chewing. There is a gap between incisors and molars. Rabbits do not have canine teeth. So that this highly evolved system can work, the teeth need to meet properly.
Why does my rabbit have a crooked tooth?
Causes of teeth issues in rabbits are: A genetic predisposition for misaligned teeth. Dwarf and lop breeds are more likely to develop this condition. Misalignment of teeth. Inadequate amounts of rough and fibrous foods in the diet. Dental disease. Tooth trauma, such as tooth fractures. Ingestion of high levels of fluoride.