Explore topic-wise InterviewSolutions in Current Affairs.

These winds blow from the east in both the hemispheres due to the coriolis force. Hence these are known as polar easterlies.

Roaring Forties (along 40° latitude), Furious Fifties (along 50° latitudes) and shrieking sixties (60° latitudes).

The zone where the trade winds from both the hemispheres converge is known as the Inter Tropical Convergence Zone.

Transfer of antibodies from mother to child during breast feeding or through placenta during pregnancy.

To escape from summer related problems like heat and desssication.

Widely applying pesticides may lead to resurgence and secondary-pest outbreak because: 

a. Crops are planted in monoculture.

a. Crops are planted in monoculture.

It is an alien hydrophyte introduced in India. It has become invasive and cause extinction of native species. It grows faster in eutrophic water bodies and changes the dynamics of ecosystem.

(d) pesticides, creating a never-ending pesticide treadmill requiring new pest-fighting strategies.

(c) spraying of DDT in soil results in the pollution of soil and water.

The Right option is :(a) Aldrin

The PCR technique can also be used for amplifications of RNA in which case it is referred to as reverse transcription PCR (RT-PCR). In this process the RNA molecules (mRNA) must be converted to complementary DNA by the enzyme reverse transcriptase. The cDNA then serves as the template for PCR.

Cervical cancer is caused by a sexually transmitted virus called Human Papilloma virus (HPV). HPV may cause abnormal growth of cervical cells or cervical dysplasia. The most common symptoms and signs of cervical cancer are pelvic pain, increased vaginal discharge and abnormal vaginal bleeding. 

The risk factors for cervical cancer include:

1. Having multiple sexual partners

2. Prolonged use of contraceptive pills

Cervical cancer can be diagnosed by a Papanicolaou smear (PAP smear) combined with an HPV test. X-Ray, CT scan, MRI and a PET scan may also be used to determine the stage of cancer. The treatment options for cervical cancer include radiation therapy, surgery and chemotherapy.

Modem screening techniques can detect precancerous changes in the cervix. Therefore screening is recommended for women above 30 years once in a year. Cervical cancer can be prevented with vaccination. Primary prevention begins with HPV vaccination of girls aged 9-13 years, before they become sexually active. Modification in lifestyle can also help in preventing cervical cancer. Healthy diet, avoiding tobacco usage, preventing early marriages, practicing monogamy and regular exercise minimize the risk of cervical cancer.

Free nucleii are formed

(i) Hologamy: In Hologamy, the adult individuals do not produce gametes, but they themselves act as gametes and fuse to form new individuals. 

E.g.: Trichonympha 

(ii) Isogamy : Fusion of morphologically and physiologically similar gametes. 

E.g.: Monocystis

(iii) Anisogamy : Fusion of morphologically and physiologically dissimilar gametes.

E.g.: Vertebrates.

(iv) Merogamy : Fusion of small sized morphologically different gametes (merogametes) 

(v) Paedogamy : Fusion of young individuals produced immediately after the mitotic division of adult parent cell.

1. Dyad – haploid, Tetrad – Haploid 

2. It occurs in meiosis due to separation of homologous chromosomes and chromosome number reduced to half.

(b) A is correct but R is incorrect

(c) Placenta and pelvic joint and cervix

1. Anaphase I of meiosis 

2. Separation of homologous chromosomes

Fusion of young individuals produced immediately after the mitotic division of adult parent cell is called Paedogamy.

Mangolism is a genetic disorder which is caused by the presence of an extra chromosome number 21.

DNA finger printing techniques was developed by Alec Jeffreys.

2 lakh, Principle of Indemnity

Yes. The decision taken by the insurance company is correct. Mr. Surendran has no right to claim compensation from the insurance company. The principle of insurance applicable here is causa proxima. It states that insurance company will admit the claim only if the mishap has resulted directly by an event covered under the insurance. An event covered under the insurance.

Yes, if the embryo develops from the cells of nucellus or integument it will be diploid.

Correct option is D) herself

i. b) make the process sound simple. 

ii. a) “He switched on the radio to listen to the news while having dinner. 

iii. c) 4,1,5,3,2 

iv. b) clumsy 

v a. a) image 1 

v b. (a) 50% water:50% rice 

vi. d) She enquired about it in. 

vii. c) presumptuous. 

viii. b) The speaker may not have much of stage presence, but you've got to admit she's got chutzpah. 

ix. d) Smelling the delicious aroma of cooked rice 

x. a) almost perfect to taste. 

xi. c) 3 and 6

Both the strands of DNA are not copied during transcription for two reasons.

1. If both the strands act as a template, they would code for RNA with different sequences. This in turn would code for proteins with different amino acid sequences. This would result in one segment of DNA coding for two different proteins, hence complicate the genetic information transfer machinery. 

2. If two RNA molecules were produced simultaneously, double stranded RNA complementary to each other would be formed. This would prevent RNA from being translated into proteins.

Let the face value be x.

∴ Discounted value = \(\frac{x \times 5\frac12}{100} = \frac{11x}{200}\)

\(\therefore \frac{11x}{200} = 31500\)

⇒ \(\frac{31560\times 200}{11} = 578181.18\)

Correct option is B) dramatically

Correct option is C) This seems to be a common problem throughout our country and even the world.

The property of metastasis is exhibited by malignant tumors. It is the pathological process of spreading cancerous cells to the different parts of the body. These cells divide uncontrollably, forming a mass of cells called tumor. From the tumor, some cells get sloughed off and enter into the blood stream. From the blood stream, these cells reach distant parts of the body and therefore, initiate the formation of new tumors by dividing actively.

Use of 15N will be inappropriate because method of detection of 35p and 15N is different (32p being a radioactive isotope while 15N is not radioactive but is the heavier isotope of nitrogen). Even if 15N was radioactive then its presence would have been detected both inside the cell (15N incorporated as nitrogenous base in DNA) as well as in the supernatant because 15Nwould also get incorporated in amino group of amino acids in proteins). Hence the use of 15N would not give any conclusive results.

Use of 15_N will be inappropriate because method of detection of 35_P and 15_N is different (³²p being a radioactive isotope while ¹⁵N is not radioactive but is the heavier isotope of Nitrogen). Even if ¹⁵N was radioactive then its presence would have been detected both inside the cell (¹⁵N incorporated as nitrogenous base in DNA) as well as in the supernatant because ¹⁵N would also get incorporated in amino group of amino acids in proteins). Hence the use of ¹⁵N would not give any conclusive results.

• The viruses/bacteriophages grown on radioactive Sulphur (³⁵S) contained radioactive protein but not radioactive DNA, because DNA does not contain Sulphur. 
• When these viruses were allowed to infect bacteria, the bacteria did not contain radioactivity, because proteins did not enter the bacteria; hence protein is not the genetic material. 
• The viruses grown on radioactive phosphorus (³²P) contained radioactive DNA, because DNA contains phosphorus and not proteins.
• When these viruses were allowed to infect the bacteria, the bacteria were radioactive, indicating that DNA is the genetic material that has passed from the virus into bacteria

(a) gametes formation 

i) Polyblend 

ii) Ecoscan 

iii) e-waste 

iv) Dobson unit