Sickle Cell Disorders

Sickle cell anaemia is a affection where atypical hemoglobin is made, changing the structure of red blood cells. human inherit one preparation of chromosomes from their father and another set from their mother. Dominant traits require that all one p atomic number 18nt melt on the gene for the trait. Recessive traits require both get ups to break down on the genes. Sickle cell anaemia is a recessionary trait. People with one sickle cell gene are said to be carriers. If both parents are carriers, there is a 25% chance for a child to be natural with sickle cell disease

Huntingtons disease is an inherited disorder that affects the nervous system. It is caused by a  possessive allele. This means it sens be passed on by just one parent if they have the disorder. The heritable diagram shows how this can happen. It is dominant. The child of soul who has Hungtingtons disease has a 50% chance of developing the disease later. Huntingtons Disease is characterized by autosomal dominant genetic traits (rather than recessive).
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haemophilia is a recessive disorder that is carried on the X chromosome. This is why is occurs more in males.  In females both Xs would have to continue the defect to inherit the disorder.  Since males only have one X, they only need one to inherit the disorder.



Hemophilia is a recessive, sex-linked, genetic disorder in which the clotting factors are missing; which causes countless bleeding and deep bruises caused by small hits. 

Down Syndrome (trisomy 21) is incomplete dominant nor recessive. Trisomy 21 means there are 3 copies of chromosome 21 (normal is 2 copies or 1 pair). The terms dominant and recessive are used to describe particular genes and the traits they produce. A chromosome is a much bigger structure, containing more than thousands of genes. Normal homo have 23 pairs of chromosomes (46 total chromosomes). Fragile X syndrome is x linked dominant condition. It does not follow usual principle of inheritance for x linked Male carriers pass their permutations to all...If you essential to get a full essay, order it on our website: Orderessay



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