wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Pick out the correct statements:
(i) Hemophilia is a sex – linked recessive disease
(ii) Down’s syndrome is due to aneuploidy
(iii) Phenylketonuria is an autosomal recessive gene disorder
(iv) Sickle cell anaemia is an X-linked recessive gene disorder

A
(i) and (iv) are correct
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
(ii) and (iv) are correct
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
(i), (iii) and (iv) are correct
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
(i), (ii) and (iii) are correct
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D (i), (ii) and (iii) are correct
Hemophilia is a sex – linked recessive disease that impairs the body's ability to make blood clots.
Down’s syndrome (trisomy 21) is caused due to aneuploidy.
Phenylketonuria is an autosomal recessive gene disorder.

Sickle-cell disease is caused by a gene mutation that leads to the production of sickle haemoglobin, which affects the function of the red blood cells in the body. This mutation is inherited from the parents of an individual in an autosomal recessive pattern.
Autosomal means that the mutation is not unique to the X or Y chromosome and can, therefore, affect males and female equally.
Recessive means that the mutation must be present in both the father and the mother in order for the child to get the sickle cell disease.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Genetic Disorders
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon