Question

Give any two names of X- linked diseases.

Answer 1

Hint: X- the linked disease is linked with the X chromosomes present in the female, X linked chromosomes can only be able to attack the host immune cell if the X- linked chromosome is dominant or recessive and compatible with the proper chromosome division. These diseases are easily inherited from mother to their offspring.

Complete answer:
Haemophilia
- In the most not unusual styles of haemophilia, the defective gene is positioned at the X chromosome.
- A girl inherits an X chromosome from her mother and an X chromosome from her father. A male inherits an X chromosome from his mother and a Y chromosome from his father.
- This approach that haemophilia nearly always takes place in boys and is handed from mom to son through one of the mother's genes.

> Symptoms:
Unexplained and immoderate bleeding from cuts or accidents, or after surgical treatment or dental work
Many large or deep bruises, Unusual bleeding after vaccinations, Pain, swelling or tightness to your joints, Blood in your urine or stool

Fragile X syndrome
- FXS is due to an illness within the FMR1 gene positioned at the X chromosome. The X chromosome is one in every of two kinds of sex chromosomes. The other is the Y chromosome.
- The illness, or mutation, on the FMR1 gene, prevents the gene from nicely making a protein known as the fragile X intellectual retardation 1 protein. This protein performs a function inside the functioning of the anxious system

> Symptoms:
- XS can reason studying disabilities, developmental delays, and social or behavioural troubles, stuttering
- Autism, impulsiveness, interest problems

Note: X- linked diseases are caused by autoimmune disorder, weaken immune, dominant or recessive genotype which affects the phenotype and working of normal functions, X- linked chromosomes are usually inherited from parents, usually they can be cured with the help of therapy and medicines but some can be fatal if worsen in the individual.