Questions

Q:

A polygenic trait is controlled by 3 genes A, B and C. In a cross AaBbCc x AaBbCc, the phenotypic ratio of the offsprings was observed as 1 : 6 : m : 20 : m : 6 : 1. What is the value of m?

A) 10 B) 15
C) 18 D) 24
 
Answer & Explanation Answer: B) 15

Explanation:

Here crossing is AaBbCc x AaBbCc

As it is trihybrid cross,

we know, Number of zygotes formed = 4n, where n = 3

43 = 64

Given ratio of offsprings = 1 : 6 : m : 20 : m : 6 : 1

Now,  1 + 6 + m + 20 + m + 6 + 1 = 64

34 + 2m = 64

2m = 30

=> m = 15.

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Filed Under: Biology
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2 5539
Q:

The proportion of forest to the total national geographical area of India as envisaged by National Forest Policy is

A) 30.3% B) 33.3%
C) 38.3% D) 42.3%
 
Answer & Explanation Answer: B) 33.3%

Explanation:
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Filed Under: Indian Geography

13 5538
Q:

World Suicide Prevention Day (WSPD) is observed every year on _______ 

A) 1 September B) 7 September
C) 9 September D) 10 September
 
Answer & Explanation Answer: D) 10 September

Explanation:

World Suicide Prevention Day (WSPD) is an awareness day celebrated on 10 September every year, keeping in mind the end goal to give overall commitment and action to anticipate suicides, with various activities around the world since 2003.

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Filed Under: Important Days and Years
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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12 5535
Q:

Pakistan which rejoined the commonwealth, had pulled itself out it in the year

A) 1972 B) 1975
C) 1978 D) 1981
 
Answer & Explanation Answer: A) 1972

Explanation:
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Filed Under: World Organisations

7 5532
Q:

In plant body, the water and minerals are transported by _______

A) Bast B) Collenchyma
C) parenchyma D) Xylum
 
Answer & Explanation Answer: D) Xylum

Explanation:
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Filed Under: Biology

20 5532
Q:

Carbon monoxide is a common atmospheric pollutant.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Carbon monoxide is one of the major pollutant present in the world. The six most common pollutants include ozone, carbon monoxide, sulfur dioxide, lead, nitrogen oxides, and particulate matter.


 


Carbon monoxide is a common atmospheric pollutant. It is produced largely in combustion processes like in industries and in vehicles. It is a gas that cannot be seen nor smelled.

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Subject: General Awareness
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1 5528
Q:

When a ray of light is  refracted by a prism such that the angle of deviation is minimum then

A) the angle of emergence is equal to the angle of incidence B) the angle of emergence is greater than the angle of incidence
C) the angle of emergence is smaller than the angle of incidence D) the sum of the angle of incidence and the angle of emergence is equal to 90 degrees
 
Answer & Explanation Answer: A) the angle of emergence is equal to the angle of incidence

Explanation:
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Filed Under: Physics

5 5526
Q:

Which international Airport Ltd has bagged the National Award for 'Excellence' in Energy Management ?

A) New Delhi B) Lucknow
C) Hyderabad D) Mumbai
 
Answer & Explanation Answer: C) Hyderabad

Explanation:
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Filed Under: Honours and Awards
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8 5522