Is black fur dominant in guinea pigs?
In guinea pigs the gene for rough coat (R) is dominant over that for smooth coat (r) and the gene for black hair (B) is dominant over that for white hair (b). If a homozygous rough black animal is crossed with a homozygous smooth white one.
What is the genotype of a homozygous black guinea pig?
In Guinea pigs, the genotype (BB) is black, and the genotype (bb) is white color, and (Bb) is grey color, The gene (Bland bare sex-linked. 50% bb Bb Bb? 10.
What is the heterozygous genotype for black fur?
An individual that contains two different alleles of a gene is heterozygous. A cow that has two alleles for a red coat is homozygous (bb). A bull with two alleles for a black coat is homozygous (BB). A calf that has one allele for red coat color and one allele for black coat color is heterozygous (Bb).
What color is homozygous dominant?
Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white). Carriers are always heterozygous.
What homozygous dominant?
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
Is black hair heterozygous or homozygous?
Black hair is homozygous dominant.
What is an example of homozygous dominant?
A homozygous dominant genotype is one in which both alleles are dominant. For example, in pea plants, height is governed by a single gene with two alleles, in which the tall allele (T) is dominant and the short allele (t) is recessive.
What is the genotype for homozygous brown hair?
Human DNA has roughly 25,000 genes. Genes can be several alternative types called alleles example : allele B for brown hair, or b for blond. You inherit two alleles (one from each parent)….Genotype and Phenotype.
|t t||Homozygous recessive||Short plant|
How do you write homozygous dominant?
When a particular gene has identical alleles (versions) of chromosomes inherited from both parents, the gene is homozygous. A homozygous trait is referred to by two capital letters (XX) for a dominant trait, and two lowercase letters (xx) for a recessive trait.