Home
Class 12
BIOLOGY
Most common cause of mental retardation ...

Most common cause of mental retardation (Congenital) in male children is

A

Jacob syndrome or super males

B

Down's syndrome

C

Patauo's syndrome

D

Phenyl ketonuria

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

The most common substrate used in distilleries for the production of ethanol is (A) Corn meal (B) Soya meal (C) Ground gram (D) Molasses

The most important cause driving animals and plants to extinctions is (A) Alien species invasions (B) Over-exploitation (C) Habitat loss and fragmentation (D) Co-extinctions

Fill in the blanks (i) A tangent to a circle touches it in …... Point (s). (ii) A line intersecting a circle in two points is called a ….. (iii) Number of tangents can be drawn to a circle parallel to the given tangent is …. (iv) The common point of a Tangent to a circle and the circle is called ..... (v) We can draw ..... tangents to a given circle. (vi) A circle can have ..... parallel tangents at the most.

A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is (A) Plant is dioecious and bears only pistillate flowers (B) Plant is dioecious and bears both pistillate and staminate flower (C) Plant is monoecious (D) Plant is dioecious and bears only staminate flowers