Is hh a recessive or dominant?
A full head of hair is a dominant feature, with the homozygous gene of HH. However, the recessive trait – baldness – can be manifested in an individual with the homozygous recessive gene, or hh.
What phenotype is the genotype hh?
How does an individual’s genotype determine its phenotype? The genetic plan determines the physical appearance. If the genotype is Hh (H stands for dominant brown while h stands for recessive blonde), then the individual would have blonde hair.
Is hh An example of a phenotype?
e.g. HH, Hh and hh are all shorthand descriptions for genotypes. An organism’s phenotype is a description based on its observable characteristics, i.e. what an organism looks like, as a result of its genes, interacting with its environment. e.g. black hair, or blond hair.
Is the pedigree for Huntington’s disease a dominant or a recessive disease trait?
This condition is inherited in an autosomal dominant pattern , which means one copy of the altered gene in each cell is sufficient to cause the disorder.
Is Huntington’s disease homozygous dominant or heterozygous?
Huntington’s disease is an inherited disorder that causes damage to certain brain cells. It is caused by a dominant allele .
Which is a homozygous dominant hh or HH?
Individuals with dominant phenotypes can be either homozygous (HH) or heterozygous (Hh). When a recessive (hh) is selected against, a reservoir of recessive alleles remains in the heterozygotes (Hh) of the dominant phenotype.
What is genotype BB?
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. In our example, this genotype is written Bb.
What are examples of phenotype?
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.
Is HH heterozygous dominant?
For both heterozygous individuals (Hh), the gametes can carry the H (dominant allele) or the h (recessive allele). … For HH, the gametes can only carry H (the dominant allele).