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what are the disadvantages of Apomictic seeds ???

Posted by Smiley Smiley 8 years, 1 month ago

2 answers

Cicil George 8 years, 1 month ago

Disadvantage of apomictic seeds, is that it reduces genetic diversity from parent to offspring plants due to lack of variations in asexual reproduction.☺☺

1Thank You

Ard Elz 8 years, 1 month ago

It reduces genetic diversity from parent to offspring plants

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Discuss the contrivance for cross pollination

Posted by Vcf Fff 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Vcf Fff 8 years, 1 month ago

Go home

1Thank You

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RR is crossed with ww and all the Rw offsprings are pink.This is an indication that R gene is :

Posted by Anarya Makhare 8 years, 1 month ago

CBSE > Class 12 > Biology

2 answers

Preeti Kranti 8 years, 1 month ago

This is the condition of incomplete dominance I.e. both the genes are not dominant on each other that's why an intermediate condition occurs...

0Thank You

Neha Garg 8 years, 1 month ago

Partial dominant

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Terror of bengal

Posted by Alena Sharma 8 years, 1 month ago

CBSE > Class 12 > Biology

2 answers

Pranav Rastogi 8 years, 1 month ago

Eichornia

0Thank You

Sakshi Kumari 8 years, 1 month ago

Water hycainth

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The trisomy of 21chromosomes causes ?

Posted by Gurdeep Singh 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Neha Garg 8 years, 1 month ago

Dawn's syndrome

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Difference between linkage and recombination

Posted by Sparsh Anand 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Bhavna Shukla 8 years, 1 month ago

The physical association of 2 or more genes on a chromosome is called linkage whereas recombination explains the generation of non parental gene combinatios

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What is map unit in recombination

Posted by Sparsh Anand 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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What is base analogue

Posted by Sparsh Anand 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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the main reason for making copper t most effective and popular inpra uterine device in female a) increased phagocytoces of spertogoa to release of copper ion b) reduction in motility of spermatogoa c)reduction in frtilisation ability in spermatozoa

Posted by Jyoti Prakash 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Bhavna Shukla 8 years, 1 month ago

Reduction in motility of spermatogoa

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What is hypoid

Posted by Jyotsana Jha 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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Mitochondria present how

Posted by Md Fuzail Khan 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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whats important ch in biology

Posted by Elina M 8 years, 1 month ago

CBSE > Class 12 > Biology

2 answers

Elina M 8 years, 1 month ago

itz really too hard

0Thank You

Annu Baghel 8 years, 1 month ago

2 unit is very important

1Thank You

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Life span of organisms

Posted by Agnes Mariya Sabu 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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What is molecular phylogeny

Posted by Sadique Ashfaque 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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Crown gall disease in plant??

Posted by R Raja 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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APOMIXIS

Posted by Nancy Poonia 8 years, 1 month ago

CBSE > Class 12 > Biology

2 answers

S Hebbar 8 years, 1 month ago

If the seeds are produced without fertilisation then such phenomenon is known as apomixis Example:- Species of Asteraceae ( sunflower family), Grass

0Thank You

R Raja 8 years, 1 month ago

It is a type of asexual reproduction which mimics sexual reproduction and produce seeds without fertilisation.The seed produced are viable.No pollination occour here.

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what is cry gene? in which organism they are present?

Posted by Rajat Kant 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

R Raja 8 years, 1 month ago

cry genes produce Cry proteins(an insecticidal protein). Present in bacterium Bacillus thuringiensis .

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what is antigen and antibody...???????

Posted by Elina M 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Some important points for Tapeworm

Posted by Furkhan Ahmad 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Ujjwal Dokania 8 years, 1 month ago

Tapeworm is belongs to phylum platyhelminthes. It's scientific name is Taenia solium.

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Metaphase mitosis

Posted by Richa Sinha 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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In human capacitation of sperms occurs in

Posted by Rohit Gupta 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

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Sperm should be released in women body

Posted by Subroto Barik 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Is ncert question enough for biology subject..???

Posted by Elina M 8 years, 1 month ago

CBSE > Class 12 > Biology

3 answers

Elina M 8 years, 1 month ago

thnkzz

0Thank You

Tanuja Biswas 8 years, 1 month ago

Attempt ncert questions first then plz once go through last year question papers also ....becoz the type of questions that are given in ncert are not asked frequently in paper. Ncert questions are also imp ..but plz do attempt last year papers too....?

1Thank You

Vandana Patal 8 years, 1 month ago

Yes if you understand fully biology book well

1Thank You

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T.s of testis

Posted by Ankita Pundir 8 years, 1 month ago

CBSE > Class 12 > Biology

2 answers

Brar Aniket 8 years, 1 month ago

What is your question? Just Google the diagram.

0Thank You

Rahul✔ Kapoor✔ 8 years, 1 month ago

ankita tum uttarakhand se ho??

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The person with blackbile belonged to hot personality and would have fever . Please explain this statement

Posted by Deekshant Yadav 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Annu Baghel 8 years, 1 month ago

Ye baat toh mujhe bhi abhi tk samj me nhi aayi

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ANSWER

What is balbiani rings

Posted by Sparsh Anand 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Brar Aniket 8 years, 1 month ago

Huge tufts of chromosome in polytene chromosomes

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Cut pieces of bryophyllum leaves when put into wet soil produce new plants .how?

Posted by Sakshi Kumari 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Tanvi Singh 8 years, 1 month ago

Here...bryophyllum leaves acts as vegetative propagule n therefore it is able to produce new plant.this type of reproduction is called vegetative propagation.

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Tell me some questions asked in biology practical viva...please

Posted by Rishika Sinha 8 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Why unicellular organisms are immortal?

Posted by Sahil Jangra 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Deekshant Yadav 8 years, 1 month ago

Unicellular organisms are considered immortal mainly because,in them the parent body as a whole constitutes the reproductive unit and after reproduction continues to live as daughter cells .

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Why plasmid and bacteriophages are used as cloning vector??? ???????

Posted by Annu Baghel 8 years, 1 month ago

CBSE > Class 12 > Biology

5 answers

Annu Baghel 8 years, 1 month ago

Please Jaldi btana kl mera bio ka practical h

0Thank You

Annu Baghel 8 years, 1 month ago

Yaha pr independent of chromosomal DNA ka meaning kya h????? ??????

0Thank You

Annu Baghel 8 years, 1 month ago

Plasmid and bacteriophages are used as cloning vector bcoz they have the ability to replicate within the bacterial cell independent of chromosomal DNA

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Brar Aniket 8 years, 1 month ago

They can replicate themselves using host machinery (can replicate)

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Awni Gupta 8 years, 1 month ago

Because they contains extra DNA

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