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What is meoisis

Posted by Arun Kumar Kumar 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Aadarsh Chauhan 8 years, 3 months ago

It is a type of cell cycle in which a cell divides into 4 daughter cell by undergoing through Meiosis 1 & Meiosis 2

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How to read pedigree analysis

Posted by Anshuman Chandel 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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What is microbes

Posted by Abhinav Kushwaha 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Rupali Manjharia 8 years, 3 months ago

Microbes are the microscopial organisms that may exist in unicellular forms or in colonies.

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1.What is the use of agrose gel Intel eletrophorosis? 2. How are viginal caps used?

Posted by Sanjana Tyagi 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Aadarsh Chauhan 8 years, 3 months ago

1. Agrose gel have minute pores in it through which the DNA fragments travel and get separate on the basis of their size, smallest at the bottom & largest at the upside.

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What is aminoacylation? State it's significance.

Posted by Mansi Soni 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Amar Kumar 8 years, 3 months ago

Aminoacylation:It is a two stage process whereby amino acids are 'activated' in order to be incorporated into proteins; energy in the form of ATP is required and one of a family of 20 aminoacyl-tRNA synthetases, one specific for each amino acid, links the carboxyl group of the amino acid to either the 2′- or 3′-hydroxyl group of the ribose unit at the 3′-end of tRNA.

Amino acids are activated in the presence of ATP and linked to (cognate) t-RNA

Significance: Carries amino acid to the site of protein synthesis / reaches amino acids to the respective codon

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Full name of MOET?

Posted by Luksh Kumar 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Amar Kumar 8 years, 3 months ago

Multiple Ovulation and Embryo Transfer

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Transriptionally active region of chromatin

Posted by Yatin Bajaj 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Shahnaj Begum 8 years, 3 months ago

it's euchromatin..

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How anthropogenic action helped evolution

Posted by Sanjukta Mohapatra 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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How does the human body maintain constant temperature in summer and winter?

Posted by Hima Kashyap 8 years, 3 months ago

CBSE > Class 12 > Biology

2 answers

Mansi Soni 8 years, 3 months ago

Because human are Homeothermic. Human and bird are have constant temperature . Temperature can effect organism but they tolerate excess or narrow range temperature. That can tolerate narrow range of temperature which 3 degree to 5 degree cover then these are called sternothermal and that can tolerate wide range of temperature . Size proportional to 1/surface area , then these are called eurythermal.

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Sanjukta Mohapatra 8 years, 3 months ago

In summer through sweating n in winter through shivering

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Palindromic sequence

Posted by Rohan Jaint 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Shahnaj Begum 8 years, 3 months ago

the sequence which reads same from both the sides eg:malayalam, eye....

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alleles are slightly different form of same gene(Tt).but why tt and TT are considered as alleles??

Posted by A.Sai Manikantha 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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What is continental drift

Posted by Kshitij Verma 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Anjali Anu 8 years, 3 months ago

It refers to a fact that continents r not stationary but move across earth's surface .It is a modern theory of plate tectonics.

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Stratifications

Posted by Om Rajput 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Anjali Anu 8 years, 3 months ago

Arrangement in layers.

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Laydig cell

Posted by Shariq Shariq 8 years, 3 months ago

CBSE > Class 12 > Biology

2 answers

Shivani Parmar 8 years, 3 months ago

Leydig cells are those cells which secrets the hormone called androgens

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Tanuja Biswas 8 years, 3 months ago

It actually leydig cells...it is also known by the name interstitial cells. These cells are present in the interstitial spaces in the seminiferous tubules. They release androgens in males.

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Cry protein

Posted by Saman Rose 8 years, 3 months ago

CBSE > Class 12 > Biology

3 answers

Shahnaj Begum 8 years, 3 months ago

produced by Bt to kill insects..

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Shivani Parmar 8 years, 3 months ago

CRY PROTEIN IS TOXIN CRYSTALS WHICH ARE SOLUBLE IN ALKALINE MEDIUM OR WE CAN SAY THAT THEY ARE ACTIVE IN ALKALINE MEDIUM .PRESENT IN BACILLUS thuringenisis .

1Thank You

Vivek Yadav 8 years, 3 months ago

Cry proteins are a large family of crystalline toxins produced by Bacillus thuringiensis. Individually, the family members are highly specific, but collectively, they target a diverse range of insects and nematodes.

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Short note on cry protein

Posted by Saman Rose 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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What is Quantum speciation

Posted by Preeti Kranti 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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HIV attack which cell

Posted by Vishu Sahu 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Preeti Kranti 8 years, 3 months ago

First it attacks macrophages and then helper T cells

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Explain the importance of syngamy and meiosis in a sexual life cycle of an organism

Posted by Akash Dayal 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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Explain the situation of embriyonic period

Posted by Mansi Soni 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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why is it that the organ cannot be taken from just anybody

Posted by Navneet Neet 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Shruti R 8 years, 3 months ago

Due to graft rejection

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Any one want to join me on Facebook

Posted by Naman Bansal 8 years, 3 months ago

CBSE > Class 12 > Biology

0 answers

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Example of amensalism

Posted by Sghghyj Xghhi 8 years, 3 months ago

CBSE > Class 12 > Biology

2 answers

Shahnaj Begum 8 years, 3 months ago

in which one species get profit while the other one is neither benifited nor harmed...

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Amar Kumar 8 years, 3 months ago

Black walnut (Juglans nigra), which secretes juglone, a substance that destroys many herbaceous plants within its root zone.

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Parthenocarus

Posted by Samuel Martin Bonthu 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Amar Kumar 8 years, 3 months ago

Parthenocissus:It is a genus of tendril climbing plants in the grape family, Vitaceae. It contains about 12 species native to the Himalayas, eastern Asia and North America.

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what can be the perfect definition of a gene

Posted by Moumita Giri 8 years, 3 months ago

CBSE > Class 12 > Biology

1 answers

Amar Kumar 8 years, 3 months ago

Gene:A portion of a DNA molecule that serves as the basic unit of heredity. Genes control the characteristics that an offspring will have by transmitting information in the sequence of nucleotides on short sections of DNA.

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When a cross is made between tall plant with yellow seeds and tall plant with green seed, what proportions of phenotype in the offspring could be expected to be

Posted by Gaisiamlung Mg 8 years, 3 months ago

CBSE > Class 12 > Biology