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Gentics and Evoloution MCQ question and answer with solution | Biology Gk MCQs

Learn Gentics and Evoloution MCQ Questions and answers with easy and logical explanations in Biology Gk . Gentics and Evoloution MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations Page-4 section-1

Each section contains 100 MCQs on Gentics and Evoloution .
31
Who proposed 3-D helical DNA model?
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
32
Which of the following are the most important among fossils since they show microscopic tissue structure often to the finest details?
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
33
Consider the following statements and choose the correct answer:
1. Adenine pairs with thymine (A : T) and guanine with cytosine $$\left( {G \vdots C} \right)$$
2. Adenine and thymine are joined by three hydrogen bonds through atoms
3. Guanine and cytosine are joined by two hydrogen bonds through atoms
4. The weak hydrogen bonding enables the two strands of the DNA to separate during replication
Discuss
Answer & Solution
Answer: Option D
Solution:
Let's break down this DNA pairing question!

Statement 1: Adenine pairs with thymine (A : T) and guanine with cytosine (G : C).
This is a fundamental rule of DNA base pairing, so it's TRUE.

Statement 2: Adenine and thymine are joined by three hydrogen bonds.
This is incorrect. Adenine and thymine are joined by TWO hydrogen bonds. So, it's FALSE.

Statement 3: Guanine and cytosine are joined by two hydrogen bonds.
This is also incorrect. Guanine and cytosine are joined by THREE hydrogen bonds. So, it's FALSE.

Statement 4: The weak hydrogen bonding enables the two strands of the DNA to separate during replication.
This is TRUE. The relatively weak hydrogen bonds are essential for DNA replication because they allow the DNA strands to be easily separated so they can be copied.

Therefore, only statements 1 and 4 are true.

The correct answer is Option D: Only 1 and 4 are true.
34
Triticale, the first man made crop was derived by crossing
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
35
Consider the following statements regarding the conclusions drawn from fossil records and choose the correct answer:
1. There existed a multitude of diversified animal groups, similar to the animal groups that exist today
2. The most primitive forms of life are found in the oldest rocks
3. None of the past forms of life are exactly like any of those now living
4. All fossils did not appear at a time, but appeared during different great spans of times
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
36
Consider the following statements regarding the origin of protobionts (protocells) and choose the correct answer:
1. The self-assembly process is internally controlled by selective intermolecular forces
2. The protocells possessed lipids, nucleic acids and had a definite molecular configuration
3. The protocells were heterotrophic
4. The instructions for the behaviour in the protocellular life-cycle were in the protenoids
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
37
The unit of DNA responsible for the appearance and inheritance of a character is known as a
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
38
Who among the following is called the "Father of genetics"?
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
39
Match the following lists:
List-I (Discoverer) List-II (Discovery)
a. Jenner 1. Blood grouping
b. Watson 2. Penicillin
c. Landsteiner 3. Vaccination
d. Fleming 4. Double helix
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
40
Match List-I with List-II and select the correct answer:
List-I List-II
a. Oenothera lamarckiana 1. Autoallohexaploid
b. North American cotton plant 2. Autotetraploid
c. Triticum vulgare 3. Allohexapioid
d. Solanum nigrum 4. Allotetraploid
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board