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UPSC Civil services Entrance exams General Studies test # General Science Molecular Basis of Inheritance Prepare / Learn

Q1. In rice genome project large insert genomic libraries used as the primary sequencing templates are constructed in

A. Bacterial artificial chromosomes (BACs)

B. Bacterial temporary chromosomes (BTCs)

C. Yeast artificial chromosomes (YACs)

D. Yeast mechanical chromosomes (YMCs)

Answer : Option A
Explaination / Solution:

Rice genome sequencing is being conducted along the same lines as numerous other large-scale genome sequencing projects. Large insert genomic libraries, used as the primary sequencing templates, are constructed in bacterial artificial chromosomes (BACs) or P1-derived artificial chromosomes (PACs). Sequencing of the rice genome is being performed mainly from genomic BAC or PAC libraries created from the Nipponbare variety, which was chosen as the common template throughout the IRGSP.

UPSC Civil services Entrance exams General Studies test # General Science Human Reproduction Prepare / Learn

Q2. The inner cell mass which have potency to give rise all tissue and organs is called

A. Embryo cells

B. Germ cells

C. Stem cells

D. Cleavage cells

Answer : Option C
Explaination / Solution:

The inner cell mass (embryo) contains certain cells called stem cells that have capability to give rise to all tissues or organ in adult.

UPSC Civil services Entrance exams General Studies test # General Science The p-Block Elements Prepare / Learn

Q3. The element having the noble gas plus 10 d-electron cores

A. Aluminium

B. thallium

C. Gallium

D. Boron

Answer : Option C
Explaination / Solution:

Both gallium and Indium has noble gas + 10 d electrons

[Ar] 3d10 4s2 4p1 and [ Kr] 4d105s25p1 respectively

UPSC Civil services Entrance exams General Studies test # General Science Introduction to Economics Prepare / Learn

Q4. Which is the third stage of statistical study

A. Collection of data

B. Interpretation of data

C. Presentation of data

D. Analysis of data

Answer : Option C
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Evolution Prepare / Learn

Q5. Founder effect is the

A. Small change in the allele frequency to become different species.

B. Foundation of plants

C. Large scale change in allele frequency to become different species.

D. Stabilization of gene of a population

Answer : Option C
Explaination / Solution:

The founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population. Sometimes the change in frequency is so different in the new sample of population that they become a different species. The original drifted population becomes founders.

UPSC Civil services Entrance exams General Studies test # General Science Reproductive Health Prepare / Learn

Q6. Amniocentesis is a method to

A. Sperm Count

B. Medical termination of pregnancy

C. Fertilize the egg

D. Detect genetic disorder

Answer : Option D
Explaination / Solution:

Amniocentesis is a method to known the chromosome type of the foetus. It is used to detect the genetic disorder of foetus by analyzing chromosome. It is misused to known the sex of foetus.

UPSC Civil services Entrance exams General Studies test # General Science Molecular Basis of Inheritance Prepare / Learn

Q7. Repetitive DNA sequence shows high degree of polymorphism that forms the basis of

A. Genetic disease assessment

B. Cell differentiation

C. Cell division

D. DNA fingerprinting

Answer : Option D
Explaination / Solution:

The term DNA fingerprinting - or genetic fingerprinting - is applied to the scientific process whereby samples of DNA are collected, collated and used to match other samples of DNA, which may have been found at the scene of a crime.

DNA fingerprinting works on the basis that each individual's DNA structure - or genetic make-up - is unique and therefore cannot be forged, faked or altered in any way.

One of the most common DNA fingerprinting procedures is RFLP: Restriction Fragment Length Polymorphism. Special enzymes are used to cut segments of a sample from which DNA is extracted. The procedure of RFLP focuses on repetitious sequences of DNA 'bases' which vary greatly from individual to individual.

UPSC Civil services Entrance exams General Studies test # General Science Human Reproduction Prepare / Learn

Q8. Shortest phase of the menstrual cycle is

A. Menses

B. Ovulatory phase

C. Follicular phase

D. Luteal phase

Answer : Option B
Explaination / Solution:

Menstrual cycle is divided into several phase starting from menses during which endometrium breaks and comes out through vagina for 4 to 5 days. Ovulatory phase occurs in the middle of menstrual cycle (14/15th day) during which egg is released.

UPSC Civil services Entrance exams General Studies test # General Science The p-Block Elements Prepare / Learn

Q9. Which of the following is a Lewis acid?

A. MgCl2

B. Ca Cl2

A l C l_{3}

D. BaCl2

Answer : Option C
Explaination / Solution:

A l C l_{3}

is lewis acid. Group 13 halides are lewis acid because of having incompletely filled orbitals.

UPSC Civil services Entrance exams General Studies test # General Science Introduction to Economics Prepare / Learn

Q10. Which limitation of statistics is highlighted in the below example In cloth business profit earned in three years is Rs.1000, Rs.2000 and Rs.3000 and in paper business profits profit earned is Rs.3000, Rs.2000 and Rs.1000. Both businesses earring same average profit Rs.2000 that shows both have same economic status. But actually cloth business is making profit and paper business is declining

A. Prone to misuse

B. statistics of numerical facts only

C. Without reference result may prove to wrong

D. study of aggregates only