Give differences : Haemophilia and Sickle-cell Anaemia
Haemophilia | Sickle-cell Anaemia |
$(1)$ It occur due to a defective recessive allele present on the $X$-chromosome. | $(1)$ It occurs due to point mutation i.e. a single base pair change leads to a change in amino acid. |
$(2)$ The defective allele produce nonfunctional protein which later form a non-functional protein which later form a non-functional cascade of protein involving in blood clotting | $(2)$ In this glutamic ($Glu$) acid is replaced by Valine ($Val$) at sixth position of beta globin chain of haemoglobin molecule. |
$(3)$ It is a sex-linked recessive disorder. | $(3)$ It is an autosomal linked recessive disorder. |
$(4)$ More males are affected than females. | $(4)$ Both males and females are affected equally. |
One of the genes present exclusively on the $X$-chromosome in humans is concerned with
If a colour blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness ?
Mention any two autosomal genetic disorders with their symptoms.
Colour blindness is caused by a single
A woman with normal vision, but whose father was colour blind, marries a colour blind man. Suppose that the fourth child of this couple was a boy. Thus boy