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  • 1 answers

Gaurav Seth 6 years, 6 months ago

Definition

Hemophilia

Is an inherited bleeding disorder, manifesting predominantly in worldwide male population. However, about 30% of hemophilia patients have no prior family history of bleeding disorder. In these cases, it is caused by mutation in their genes that lead to bleeding disorder. It is a lifelong disease.

Thalassemia

Is a group of inherited blood disorders. It can affect people of any nationality, but it is particularly common in people with ancestry from the Mediterranean and across a broad region extending through India, the Middle East and Asia. It can occur in both male and female population. It is a lifelong disease.

Root Cause

Hemophilia

People with hemophilia have either defective or lack of clotting factors. Clotting factors are protein in blood necessary to stop bleeding. The body produces 13 clotting factors. If any of them are defective or deficient, blood clotting is affected. People with hemophilia usually have longer bleeding time compared to unaffected people.

Thalassemia

People with thalassemia have either abnormal or lack of hemoglobin in their red blood cells. The bone marrow is responsible for the production of hemoglobin, using iron from diet intake to produce hemoglobin. 

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Nishu Goyal 6 years, 6 months ago

Coding segments of DNA that are actually reponsible for coding protein
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Hritwik Raj 6 years, 6 months ago

Visit cbseacademics.nic.in

Sanjay Choudary 6 years, 6 months ago

Yes.... 20 out of 70 marks are mcqs...
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  • 2 answers

Sumit Gurjar 6 years, 6 months ago

Yes paper will always from ncert

Ďãřşháñăã Yadav ? ? ? 6 years, 6 months ago

yes ncert is sufficient no need to follow refresher for genetics.
  • 2 answers

Ďãřşháñăã Yadav ? ? ? 6 years, 6 months ago

if u have pcmb then u can do engineering otherwise no

Disha Gharu 6 years, 6 months ago

Yes ,u can be a genetic engineer...
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  • 1 answers

Arman Ahmed 6 years, 6 months ago

Read the microsporangium topic in ncert class 12 biology
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Meghna Thapar 5 years, 8 months ago

The animals have a developed ways to cope with the deep ocean's intense water pressure. This force, which is the result of the weight of a column of water pushing down, is so strong in the bathypelagic zone that it would crush anything with air in it. That would be a problem for most fish, since many of them have a gas-filled organ called a swim bladder a large, thin-walled sac in some fishes that may function in several ways, e.g., as a buoyant float, a sound producer and receptor, and a respiratory organ. that helps them stabilize their bodies at different water depths. But many deep-sea fish have adapted to life without a swim bladder. Without the bladders, deep-sea fishes don't have gas spaces in them that would cause them to get crushed.

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Meghna Thapar 5 years, 7 months ago

Genetic maps are species-specific and comprised of genomic markers and/or genes and the genetic distance between each marker. These distances are calculated based on the frequency of chromosome crossovers occurring during meiosis, and not on their physical location on the chromosome. Alfred Sturtevant was a student of Morgan who mapped the positions of genes on a chromosome by using the frequency of recombination between the gene pairs present on the same chromosome. This process of mapping the gene positions was termed as 'gene mapping'.

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Hritwik Raj 6 years, 6 months ago

Repetive dna is the non coding sequence of dna that contains segments that are repeted several times in the genome of an individual.The repetive dna sequences are called variable no of tandem. Satellite dna are dna sequences thar contain highily repetive dna . Satellite dna is a type of repeitve which is classified on the basis of repetive units , no of base pair e.t.c
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Meghna Thapar 5 years, 8 months ago

Immune cells recognise danger through a group of molecules found on the surface of all cells in the body. ... “Cancer cells also develop ways to inactivate immune cells by producing molecules that make them stop working.” They also change their local environment, so it becomes a hostile place for immune cells to work. When cancer cells are able to block the function of a gene called NLRC5, they are able to evade the immune system and form tumors, according to research. ... "Because of this, all cancer cells have new, 'foreign' genes, which host T-cells generally detect as tumour antigens. This anti-tumour system works very well."

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Meghna Thapar 5 years, 8 months ago

Researchers can design antibodies that specifically target a certain antigen, such as one found on cancer cells. They can then make many copies of that antibody in the lab. These are known as monoclonal antibodies (mAbs or Moabs). Monoclonal antibodies are used to treat many diseases, including some types of cancer. Some immune system cells depend on antibodies to locate the target of an attack. Cancer cells that are coated in monoclonal antibodies may be more easily detected and targeted for destruction. Triggering cell-membrane destruction.

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Gaurav Seth 6 years, 6 months ago

During microsporogenesis, meiosis occurs in:
A. Endothecium

B. Microspore mother cells
C. Microspore tetrads
D. Pollen grains.

Answer

During Microsporogenesis, meiosis occurs in microspore mother cells.

As anther develops the cells of Sporongenous tissues undergo meiotic divisions to form microspore tetrads.

The microspore tetrad after dehydration is separated into pollen grains.

Endothecium is the lining of the cavity of an anther.

Therefore, the correct answer is option (b).

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Yogita Ingle 6 years, 6 months ago

Semen (produced in males) is composed of sperms and seminal plasma. The major components of the seminal plasma in the male reproductive system are mucus, spermatozoa, and various secretions of accessory glands. The seminal plasma is rich in fructose, calcium, ascorbic acid, and certain enzymes. It provides nourishment and protection to sperms.

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Nishu Goyal 6 years, 6 months ago

Because there are chances that they will use already used needles (used by AIDS patient ) for taking drug by interveinous method
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Meghna Thapar 5 years, 8 months ago

Recombinant DNA, molecules of DNA from two different species that are inserted into a host organism to produce new genetic combinations that are of value to science, medicine, agriculture, and industry. In generally, a recombinant DNA technology has five steps: (1) cutting the desired DNA by restriction sites, (2) amplifying the gene copies by PCR, (3) inserting the genes into the vectors, (4) transferring the vectors into host organism, and (5) obtaining the products of recombinant genes.

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Shivam Bhadouriya 6 years, 6 months ago

Ok now i got it

Shivam Bhadouriya 6 years, 6 months ago

Pls correct me

Shivam Bhadouriya 6 years, 6 months ago

whether? But i think removal lo introns is universal?

Hritwik Raj 6 years, 6 months ago

RNA determines weather to keep introns or remove introns in split gene arrangement..... Hence, it dominates in RNA world
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Nishu Goyal 6 years, 6 months ago

Vector is going to provide clonning site to the piece of desired gene so that it can form multiple copies and perform its function .
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Disha Trivedi 6 years, 6 months ago

it is double stranded,has phosphodiester bond,it consist of thymine which is stable.

Harpreet Kaur 6 years, 6 months ago

DNA is more stable than rna because firstly DNA has one oh group while rna has two . More the number of functional group more is the reactivity and less is stability. Secondly in DNA a binds with t which is stable base while in rna a binds with u which is unstable. Hence DNA is more stable .

Shivam Chaurasia 6 years, 6 months ago

Because it has only single strands,it have additional o atom at 5 position,
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Gursharn Kaur 6 years, 6 months ago

X body is a dense material present which connects the radial fibres of a centromere to ABC Fibres
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Disha Trivedi 6 years, 6 months ago

meiosis 2 occurs when secondary oocyte changes to ovum

Disha Trivedi 6 years, 6 months ago

meosis 2 occurs when after fertilisation primary oocyte changes to secondary oocyte

Hritwik Raj 6 years, 6 months ago

Meiosis 2 occurs only aftr fertilsation rresulting in mature ovum and sec polar body
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Yogita Ingle 6 years, 6 months ago

It is a method of breeding crops with higher levels of vitamins, minerals, healthier fats to improve public health. The objective of breeding for improved nutritional quality is to enhance:
(a) Protein and oil content, and quality.
(b) Vitamin content.
(c)  Micronutrients and mineral content.
 

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Sia ? 6 years, 6 months ago

Psittaciformes

Malti Kumari 6 years, 6 months ago

Psittaciformes

Amrita Mohanty 6 years, 6 months ago

Psittaciformes
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Hritwik Raj 6 years, 6 months ago

Write topic after studying

Amrita Mohanty 6 years, 6 months ago

U know hw tu read and u can teach tu any also but u cant write so i think u re too stressed that u re thinking that u cannot write in exam just relax and think whatever u have read then i think the answer will come atomaticaalyy☺️ okay

Anisha Sharma 6 years, 6 months ago

Bss aur suggestions ki jrurat nhii h.......

Nishu Goyal 6 years, 6 months ago

Agar apko topic ata hai or likhna nhi ata toh is ka yeh mtllb bhi ho sakta hai ki apko english mai problem hai

Khuskaran Sidhu 6 years, 6 months ago

Do practice of answers by writing on rough nb

Paras Kundu 6 years, 6 months ago

You must read the solved question answer from any book
  • 3 answers

Sia ? 6 years, 6 months ago

Amniocentesis is a medical procedure used primarily in prenatal diagnosis of chromosomal abnormalities and fetal infections, as well as for *** determination.

Disha Trivedi 6 years, 6 months ago

amniocenetesis is the process of finding abnormalities in the develping embryo inside the mother .amniotic fluid is used to detect the abnormalilites. it is misused by the people by determining ***,gender and complextion of the embryo

Mangal Patidar 6 years, 6 months ago

It is a technique used to find out chromosomal abnormalities in developing embryo by using amniotic fluid. It is also misused to check foetal *** determination based on the chromosomal pattern in the amniotic fluid surrounding the developing embryo.
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Sia ? 6 years, 6 months ago

Green algae are autotrophic organisms, i.e. they synthesise their own food with the help of photosynthesis. At deepest layers of ocean, light is absent. So, photosynthesis does not take place there, and hence, green algae are not found in deep strata.

Madhukar Dutt Tripathi 6 years, 6 months ago

Red light travels more dustance than brown light. So the access to the algal growth would be easy for red light. Which , therefore , points towards the presence of red algae amongst the two forms.
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Madhukar Dutt Tripathi 6 years, 6 months ago

See a gene results in polypeptide formation. Now, a complete polypeptide might not be formed from a small part of DNA at certain location, hence for that polypeptide, a complete gene wouldn't be available in one single piece. Also, with evolution and introduction of poly istronic way, it becomes difficult to define a complete gene.
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Yash Soni 6 years, 6 months ago

Due to increase female foeticide

Shivam Bhadouriya 6 years, 6 months ago

Because people are misusing it for *** determination of unborn child

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