set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 4 EXERCISES
The following question based on genetic engineering and bio technology topic of general science mcq
(a) 9 : 3 : 3 : 1
(b) 3 : 1
(c) 1 : 2 : 1
(d) 2 : 1
The correct answers to the above question in:
Answer: (b)
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Question : 2
Sexual reproduction causes genetic variation because of
a) Shuffling of genes
b) Blending of genes
c) Chromosomal changes
d) All of the above
Answer »Answer: (d)
Question : 3
Assertion (A):
Dolly was the first cloned mammal.
Reason (R):
Dolly was produced by in-vitro fertilization.
a) (A) is true, but (R) is false
b) Both (A) and (R) are true and (R) is the correct explanation of (A)
c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
d) (A) is false, but (R) is true
Answer »Answer: (a)
Question : 5
Mutations can be induced with
a) ethylene
b) infrared radiations
c) I AA
d) gamma radiations
Answer »Answer: (d)
Question : 6
Sickle cell anaemia is
a) characterized by elongated sickle like RBCs with a nucleus.
b) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin.
c) caused by a change in a single base pair of DNA.
d) an autosomal linked dominant trait.
Answer »Answer: (c)
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