Jo bhi new students hai vo sabhi is quiz wale group ko join kr lo isme daily 9:30 pm topic wise live quiz hoti hai 👇
https://t.me/csirnetlifesciencestudent
https://t.me/csirnetlifesciencestudent
CSIR NET PYQ PRACTICE
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CSIR NET PYQ PRACTICE (English)
Are you preparing for CSIR NET, Gate XL exam, NEET, or JEE? Look no further! Join our Telegram channel - CSIR NET PYQ PRACTICE, where you will find all the books in PDF format to help you ace your exams. Our channel, with the username @csirnetpyqpractice, is dedicated to providing you with the practice material you need to succeed. Whether you are studying for CSIR, NET, Gate XL exam, NEET, or JEE, you will find a treasure trove of resources here. From past year question papers to study guides, we have got you covered. Stop wasting time searching for study materials and join CSIR NET PYQ PRACTICE today. Let us guide you on your journey to academic success. Don't miss out on this valuable resource - join now!
CSIR NET PYQ PRACTICE
07 Jan, 13:44
In mice, a specific mitochondrial mutation affects energy production. A cross is performed between an affected female and an unaffected male, resulting in offspring with variable degrees of the disorder. When the cross is reversed (affected male × unaffected female), none of the offspring are affected. What best explains this result?
a. Mendelian inheritance with incomplete penetrance
b. Cytoplasmic inheritance with heteroplasmy
c. Autosomal dominant inheritance of a nuclear gene
d. X-linked inheritance of a mitochondrial gene
a. Mendelian inheritance with incomplete penetrance
b. Cytoplasmic inheritance with heteroplasmy
c. Autosomal dominant inheritance of a nuclear gene
d. X-linked inheritance of a mitochondrial gene
CSIR NET PYQ PRACTICE
07 Jan, 13:44
In a study of a chloroplast mutation affecting photosynthesis, a variegated plant is crossed with a green plant:
1. Cross 1: Variegated female × Green male → Progeny are green, variegated, and white.
2. Cross 2: Green female × Variegated male → Progeny are all green.
What does this experiment reveal about chloroplast inheritance?
a. Chloroplast inheritance is controlled by Mendelian genetics.
b. Chloroplast inheritance is biparental but masked by dominant alleles.
c. Chloroplast inheritance is strictly maternal, and the phenotype depends on the mother's cytoplasm.
d. Chloroplast inheritance is nuclear-controlled with incomplete dominance.
1. Cross 1: Variegated female × Green male → Progeny are green, variegated, and white.
2. Cross 2: Green female × Variegated male → Progeny are all green.
What does this experiment reveal about chloroplast inheritance?
a. Chloroplast inheritance is controlled by Mendelian genetics.
b. Chloroplast inheritance is biparental but masked by dominant alleles.
c. Chloroplast inheritance is strictly maternal, and the phenotype depends on the mother's cytoplasm.
d. Chloroplast inheritance is nuclear-controlled with incomplete dominance.
CSIR NET PYQ PRACTICE
07 Jan, 13:43
A scientist conducts a reciprocal cross between two snail populations:
Cross 1: Dextral female × Sinistral male → All progeny are dextral.
Cross 2: Sinistral female × Dextral male → All progeny are sinistral.
Which statement best explains the inheritance pattern?
a. Nuclear inheritance with incomplete dominance
b. Maternal inheritance of mitochondrial DNA
c. Maternal effect gene controlling early development
d. Paternal inheritance of a nuclear gene
Cross 1: Dextral female × Sinistral male → All progeny are dextral.
Cross 2: Sinistral female × Dextral male → All progeny are sinistral.
Which statement best explains the inheritance pattern?
a. Nuclear inheritance with incomplete dominance
b. Maternal inheritance of mitochondrial DNA
c. Maternal effect gene controlling early development
d. Paternal inheritance of a nuclear gene
CSIR NET PYQ PRACTICE
07 Jan, 13:42
In humans, a family is affected by a mitochondrial disease due to a mutation in the mtDNA. Affected females transmit the disease to all of their children, while affected males do not transmit it to any of their children. What would you expect if an affected female reproduces with an unaffected male?
a. All children will inherit the disease with equal severity.
b. None of the children will inherit the disease.
c. All children will inherit the disease, but severity may vary.
d. Only female children will inherit the disease.
a. All children will inherit the disease with equal severity.
b. None of the children will inherit the disease.
c. All children will inherit the disease, but severity may vary.
d. Only female children will inherit the disease.
CSIR NET PYQ PRACTICE
07 Jan, 13:42
In an experiment, researchers crossed two yeast strains:
Strain 1: Sensitive to an antibiotic (mitochondrial DNA lacks resistance gene).
Strain 2: Resistant to the antibiotic (mitochondrial DNA contains resistance gene).
After crossing, the progeny are grown on an antibiotic-containing medium. All the progeny survive. Which of the following explains this result?
a. Mendelian inheritance of the resistance gene
b. Biparental inheritance of mitochondria with recombination
c. Cytoplasmic inheritance with dominance of resistant mitochondria
d. Uniparental inheritance of resistant mitochondria from Strain 2
Strain 1: Sensitive to an antibiotic (mitochondrial DNA lacks resistance gene).
Strain 2: Resistant to the antibiotic (mitochondrial DNA contains resistance gene).
After crossing, the progeny are grown on an antibiotic-containing medium. All the progeny survive. Which of the following explains this result?
a. Mendelian inheritance of the resistance gene
b. Biparental inheritance of mitochondria with recombination
c. Cytoplasmic inheritance with dominance of resistant mitochondria
d. Uniparental inheritance of resistant mitochondria from Strain 2
CSIR NET PYQ PRACTICE
06 Jan, 08:59
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CSIR NET PYQ PRACTICE
03 Dec, 15:30
https://t.me/LIFESCIENCEDISCUSSIONGROUP1
Discussion group join kr lo
Discussion group join kr lo
CSIR NET PYQ PRACTICE
03 Dec, 15:26
A mutation in the promoter region of a gene involved in the cell cycle leads to reduced expression of the gene. Explain how this mutation affects the cell cycle and discuss the following:
(i) Regulation of the G1/S checkpoint
(ii) Role of cyclins and CDKs (cyclin-dependent kinases) in cell cycle progression
(iii) Possible consequences for cell proliferation and tumor suppression
Options:
a) The cell cycle will proceed normally, as other cyclins and CDKs can compensate.
b) Reduced expression of the gene will arrest the cell cycle at the G1/S checkpoint.
c) The mutation will increase cell proliferation by bypassing the checkpoint.
d) The mutation will have no effect on the cell cycle as the promoter is not critical for regulation.
(i) Regulation of the G1/S checkpoint
(ii) Role of cyclins and CDKs (cyclin-dependent kinases) in cell cycle progression
(iii) Possible consequences for cell proliferation and tumor suppression
Options:
a) The cell cycle will proceed normally, as other cyclins and CDKs can compensate.
b) Reduced expression of the gene will arrest the cell cycle at the G1/S checkpoint.
c) The mutation will increase cell proliferation by bypassing the checkpoint.
d) The mutation will have no effect on the cell cycle as the promoter is not critical for regulation.
CSIR NET PYQ PRACTICE
03 Dec, 15:26
Researchers discovered a novel protein that binds to the promoter region of a gene and prevents transcription. When this protein is mutated, the gene is overexpressed. Explain the regulatory mechanism and predict the effects of the mutation on cellular functions. Consider the following aspects:
(i) Role of repressors in transcriptional regulation
(ii) Consequences of gene overexpression on cellular metabolism
(iii) Possible development of diseases due to deregulation
Options:
a) The mutation will have no effect, as transcription is regulated by multiple factors.
b) Overexpression of the gene will lead to an imbalance in cellular metabolism.
c) The mutation will be compensated by upregulation of other repressors.
d) The cell will become more efficient due to increased gene expression.
(i) Role of repressors in transcriptional regulation
(ii) Consequences of gene overexpression on cellular metabolism
(iii) Possible development of diseases due to deregulation
Options:
a) The mutation will have no effect, as transcription is regulated by multiple factors.
b) Overexpression of the gene will lead to an imbalance in cellular metabolism.
c) The mutation will be compensated by upregulation of other repressors.
d) The cell will become more efficient due to increased gene expression.
CSIR NET PYQ PRACTICE
03 Dec, 15:25
In a study of developmental biology, a researcher used a chemical inhibitor that blocks the Hedgehog signaling pathway during early embryonic development in a vertebrate model. What effects would this have on the organism? Discuss the following aspects:
(i) Role of the Hedgehog pathway in cell fate determination
(ii) Impact on patterning of the neural tube
(iii) Effect on limb bud formation
Options:
a) The organism will develop normally due to redundancy in signaling pathways.
b) Neural tube patterning and limb bud formation will be disrupted.
c) Cell fate determination will be unaffected as Hedgehog signaling is not critical in early development.
d) The organism will adapt by activating alternative signaling pathways.
(i) Role of the Hedgehog pathway in cell fate determination
(ii) Impact on patterning of the neural tube
(iii) Effect on limb bud formation
Options:
a) The organism will develop normally due to redundancy in signaling pathways.
b) Neural tube patterning and limb bud formation will be disrupted.
c) Cell fate determination will be unaffected as Hedgehog signaling is not critical in early development.
d) The organism will adapt by activating alternative signaling pathways.
CSIR NET PYQ PRACTICE
03 Dec, 03:48
Jisko bhi upr pin kiye huye schedule ke according quiz krni hai daily to ye wala group join kr lo
https://t.me/csirnetlifesciencestudent
https://t.me/csirnetlifesciencestudent
CSIR NET PYQ PRACTICE
02 Dec, 16:54
https://t.me/+B08vCfQONbswNWI9
Books channel link (expire in 10 min ) fast join
Books channel link (expire in 10 min ) fast join
CSIR NET PYQ PRACTICE
02 Dec, 16:00
https://t.me/csirnetlifesciencestudent
Quiz start ho gyi join kr lo sabhi
Quiz start ho gyi join kr lo sabhi
CSIR NET PYQ PRACTICE
20 Nov, 15:55
9:30 pm quiz start
Join
https://t.me/csirnetlifesciencestudent
Join
https://t.me/csirnetlifesciencestudent
CSIR NET PYQ PRACTICE
16 Nov, 17:01
Books channel
Link expire in 10 min
https://t.me/+NMCM4McN0IAzZGU1
Link expire in 10 min
https://t.me/+NMCM4McN0IAzZGU1
CSIR NET PYQ PRACTICE
13 Nov, 16:36
Books channel
Expire in 10 min
https://t.me/+fqoGzHs5uUcwNTJl
Expire in 10 min
https://t.me/+fqoGzHs5uUcwNTJl
CSIR NET PYQ PRACTICE
09 Nov, 16:36
"Hey friends! Humara group quiz sessions ke liye hai, aur agar aapke paas aise dost hain jo quizzes pasand karte hain, to unhe yahan zaroor add kar do. Zyada log honge, to competition aur bhi interesting ho jayega!"
CSIR NET PYQ PRACTICE
09 Nov, 15:35
Book channel
Link expire:- 30 min
https://t.me/+E6H6hsfA2TMyYzZl
Link expire:- 30 min
https://t.me/+E6H6hsfA2TMyYzZl
CSIR NET PYQ PRACTICE
31 Oct, 02:59
Wishing you a bright and joyful Diwali 🎇🪔 ! May this festival of lights inspire you to shine in your studies and achieve your dreams.
CSIR NET PYQ PRACTICE
25 Oct, 16:28
𝗔𝘁𝘁𝗲𝗻𝘁𝗶𝗼𝗻 𝗮𝗹𝗹 𝘀𝘁𝘂𝗱𝗲𝗻𝘁𝘀! 𝗧𝗵𝗲𝗿𝗲 𝘄𝗶𝗹𝗹 𝗯𝗲 𝗻𝗼 𝗾𝘂𝗶𝘇 𝗳𝗿𝗼𝗺 𝗢𝗰𝘁𝗼𝗯𝗲𝗿 𝟮𝟴𝘁𝗵 𝘁𝗼 𝗡𝗼𝘃𝗲𝗺𝗯𝗲𝗿 𝟰𝘁𝗵. 𝗧𝗵𝗲 𝗾𝘂𝗶𝘇 𝗼𝗿𝗶𝗴𝗶𝗻𝗮𝗹𝗹𝘆 𝘀𝗰𝗵𝗲𝗱𝘂𝗹𝗲𝗱 𝗳𝗼𝗿 𝗢𝗰𝘁𝗼𝗯𝗲𝗿 𝟮𝟴𝘁𝗵 𝘄𝗶𝗹𝗹 𝗯𝗲 𝗰𝗼𝗻𝗱𝘂𝗰𝘁𝗲𝗱 𝗼𝗻 𝗡𝗼𝘃𝗲𝗺𝗯𝗲𝗿 𝟱𝘁𝗵. 𝗘𝗻𝗷𝗼𝘆 𝘁𝗵𝗶𝘀 𝗯𝗿𝗲𝗮𝗸 𝗮𝗻𝗱 𝗺𝗮𝗸𝗲 𝘁𝗵𝗲 𝗺𝗼𝘀𝘁 𝗼𝗳 𝗶𝘁!
@errors_107
@errors_107
CSIR NET PYQ PRACTICE
23 Oct, 10:51
30 min baad expire ho jayegi us se phle join kr lo
https://t.me/+Iw3tWVyYl1cwYjA9
https://t.me/+Iw3tWVyYl1cwYjA9
CSIR NET PYQ PRACTICE
22 Oct, 11:39
https://youtube.com/shorts/xv6NkOe6lB8?si=2p0tpn-Bbf5QuF_R
CSIR NET PYQ PRACTICE
19 Oct, 16:54
Kuch time ke liye books channel ki link send kr rha hu jisko add hona h ho jana fir expire ho jayegi link
CSIR NET PYQ PRACTICE
11 Oct, 15:54
Is group me 9:30 pm quiz hogi
https://t.me/csirnetlifesciencestudent
https://t.me/csirnetlifesciencestudent
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