They do not carry the sickle cell allele, a. Individuals that are heterozygous have the advantage of being more resistant to malaria than homozygous dominant individuals, but are not affected by the disease.
Huntington disease is autosomal dominant, meaning that individuals who inherit one copy of the mutant allele from either parent will develop the disease. Thus, individuals with Huntington's disease are heterozygous for the mutant allele. Homozygous individuals would not survive past a certain age due to the severity of the disorder.
Sickle cell disease is an example of codominance, not heterozygous dominance. In individuals who are heterozygous for the sickle cell allele, they exhibit a milder form of the disease called sickle cell trait, which demonstrates codominance of the normal and mutant hemoglobin alleles.
Individuals who are heterozygous for the cystic fibrosis allele carry one normal copy of the CFTR gene and one mutated copy. Cystic fibrosis is an autosomal recessive disorder, meaning that two copies of the mutated gene are required for the disease to manifest. The presence of one normal gene allows for sufficient production of the CFTR protein, which helps regulate salt and water transport in cells, preventing the development of the disease in heterozygous individuals.
malaria
Heterozygous advantage refers to a genetic phenomenon where individuals with two different alleles for a specific gene (heterozygotes) have a higher fitness or survival rate compared to those with two identical alleles (homozygotes). This advantage often occurs in the context of certain diseases; for example, individuals who are heterozygous for the sickle cell trait are more resistant to malaria while not suffering severe symptoms associated with sickle cell disease. This concept helps explain the maintenance of genetic diversity within populations, as it can favor the persistence of certain alleles in the gene pool.
"Heterozygous" is not a disease. It is a term to describe the presence of two alternate alleles in a gene sequence.
Huntington's disease is caused by a dominant allele, so if the father has the disease, his genotype would be either homozygous dominant (HH) or heterozygous (Hh). However, since the condition is typically lethal before reproduction in homozygous dominant individuals, it's most likely that the father is heterozygous (Hh). Thus, his genotype would be Hh, where "H" represents the allele for Huntington's disease and "h" represents the normal allele.
There are not symptoms of heterozygous since it is not a disease or condition that you can get. It is a genetics term that refers to whether a gene is dominant or non dominate.
50%
its a very rare disease because you have to be heterozygous to have it! I KNOW I'M CLEVER
If one of your parents is heterozygous for Huntington's disease, you have a 50% chance of inheriting the mutated gene responsible for the condition. This is because Huntington's is an autosomal dominant disorder, meaning that only one copy of the mutated gene is needed to develop the disease. If you inherit the normal allele from the heterozygous parent, you won't develop the disease.