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    • Posted by Rushda Khan 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Yogita Ingle 6 years, 7 months ago

    Differentiate between spermatogenesis and spermiogenesis are:
    Spermatogenesis:
    1.It is a process of formation of sperms from immature germ cells.
    2.Number of cells increased as each spermatogonium produces four spermatids.
    Spermiogenesis:
    1.It is a process of transformation of a non-motile spermatid to a motile spermatozoa.
    2.No change in number of cells as only one spermatid develops into a spermatozoa.

    1Thank You

    Riya Choudhary 6 years, 7 months ago

    Process of formation of sperms from spermatogonia is known as spermatogenesis whereas transfer of spermatid into sperm is known spermiogenesis

    1Thank You

    ANSWER

    • Posted by Aryanika Agnihotri 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Aryanika Agnihotri 6 years, 7 months ago

    But in biotechnology chapter this word is used many times so what...is it

    0Thank You

    Amrita Mohanty 6 years, 7 months ago

    Is really alien exist in world

    0Thank You

    ANSWER

    • Posted by Josna Mary Thomas Thomas 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    The genetic code is the set of rules used by living cells to translate information encoded within genetic material (DNA or mRNA sequences) into proteins. Translation is accomplished by the ribosome, which links amino acids in an order specified by messenger RNA (mRNA), using transfer RNA (tRNA) molecules to carry amino acids and to read the mRNA three nucleotides at a time. The genetic code is highly similar among all organisms and can be expressed in a simple table with 64 entries.[1] The code defines how sequences of nucleotide triplets, called codons, specify which amino acid will be added next during protein synthesis. With some exceptions,[2] a three-nucleotide codon in a nucleic acid sequence specifies a single amino acid. The vast majority of genes are encoded with a single scheme (see the RNA codon table). That scheme is often referred to as the canonical or standard genetic code, or simply the genetic code, though variant codes (such as in human mitochondria) exist. While the "genetic code" determines a protein's amino acid sequence, other genomic regions determine when and where these proteins are produced according to various "gene regulatory codes".

    1Thank You

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    • Posted by Ekta Singla 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Nasima Khan 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Sia ? 6 years, 7 months ago

    Cestrum nocturnum

    1Thank You

    Amrita Mohanty 6 years, 7 months ago

    Cestrum nocturnum

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Cestrum nocturnum

    0Thank You

    ANSWER

    • Posted by Vivek Gupta 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Sia ? 6 years, 7 months ago

    To have an autosomal recessive disorder, you inherit two mutated genes, one from each parent. These disorders are usually passed on by two carriers. Their health is rarely affected, but they have one mutated gene (recessive gene) and one normal gene (dominant gene) for the condition.

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Autosomal dominant is one of many ways that a trait or disorder can be passed down through families. In an autosomal dominant disease, if you get the abnormal gene from only one parent, you can get the disease.

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    • Posted by Ramakant Kushwaha 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Ramakant Kushwaha 6 years, 7 months ago

    Thanks dear

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    The hydrophobic amino acids include alanine, valine, leucine, isoleucine, proline, phenylalanine, cysteine and methionine. ... The classification above is based on the type of the amino acid side chain.

    1Thank You

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    • Posted by Bhavya Goswami 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shivam Chaurasia 6 years, 7 months ago

    Because malaria also affected blood since it causes its rupture and parents with haha gene become affected with sickle cell anaemia get suffered from it.

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    • Posted by Amol Gùpta 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    sir what is the difference between VNTR and PROBE. Answer: VNTR: Variable number tandem repeat (or VNTR) is a location in a genome where a short nucleotide sequence is organised as a tandem repeat. These can be found on many chromosomes, and often show variations in length between individuals.

    1Thank You

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    • Posted by Singh Gurjant 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 7 answers

    Abhilasha Abhi 6 years, 7 months ago

    Vigorous contractions of the uterus at the end of pregnancy causes explusion or delivery of the foetus

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Parturition: Childbirth, the process of delivering the baby and placenta from the uterus to the ****** to the outside world. Also called labor and delivery. Parturition comes from the Latin parturire, "to be ready to bear young" and is related to partus, the past participle of parere, "to produce."

    0Thank You

    Amrita Mohanty 6 years, 7 months ago

    This is a process of delivery of feotus is called paturtion

    0Thank You

    Ramakant Kushwaha 6 years, 7 months ago

    Expelling of baby by mother's uterus through contraction

    0Thank You

    Tanvi Toor 6 years, 7 months ago

    Another name of delivery

    0Thank You

    Priya Upadhyay 6 years, 7 months ago

    Ya it is just a vigorous contraction of uterus for delivery

    0Thank You

    Yogita Ingle 6 years, 7 months ago

    Vigorous contraction of the uterus atthe end of pregnancy causes expulsion/delivery of the fetuscalled as parturition. The signals for parturition originate from the fully developed fetus and the placenta which induces mild uterine contraction is called fetal ejection reflex.

    0Thank You

    ANSWER

    • Posted by Milee Raj 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 8 answers

    Shivam Chaurasia 6 years, 7 months ago

    For ensuring continuity of life of an organism

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Reproduction is important for the survival of all living things. Without a mechanism for reproduction, life would come to an end. ... Asexual reproduction refers to simple cell division that produces an exact duplicate of an organism.

    0Thank You

    Ramakant Kushwaha 6 years, 7 months ago

    Just for the continuation of a species

    0Thank You

    Tanvi Toor 6 years, 7 months ago

    For the continuity of species

    0Thank You

    Vanshu Jais 6 years, 7 months ago

    As we all know that reproduction is not a characteristick feature of all living organism but still it is important . Because no one is immortal except the unicellular bacterias . If there is no mode of making our own kind then one day we may get extinct like dinosaurs . All live organism has a aprox fixed life span and after that they will surely die . Therefore , reproduction seems to be very essential process for continuity of a species . I hope this may help you.

    1Thank You

    Dàñïyã Ãrshãd? 6 years, 7 months ago

    It is essential as it enables continuity of species generation after generation

    2Thank You

    Soumya Kumari 6 years, 7 months ago

    Reproduction is very essential because it insures the survival of any specie.

    1Thank You

    Akash Dalal 6 years, 7 months ago

    For survival

    0Thank You

    ANSWER

    • Posted by Janhavi Bover 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Kalpana Jha 6 years, 7 months ago

    Potato- Eyes/buds/tuber Ginger- rhizome Agave- Bulbil Bryophyllum- leaf bud Water hyacinth - offset Grass- runner Pineapple- sucker These are the veg. propagules given in class 12 ncert

    1Thank You

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    • Posted by Mohan Singh Magaliya 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    The main difference between oviparous and viviparous animals is that oviparous animals do not undergo any embryonic development inside the mother whereas viviparous animals develop into a young animal inside the mother. This means oviparous animals lay eggs. ... Most mammals are viviparous animals.

    0Thank You

    Vanshu Jais 6 years, 7 months ago

    OVIPAROUS Fertilisation : internal or external Development : external No placenta formation takes place . Presence of yolk sac VIVIPAROUS Fertilisation : internal Development : internal Placenta form No yolk sac form Give young ones

    0Thank You

    Priya Upadhyay 6 years, 7 months ago

    Oviparus are those organisum who give birth to baby and Viviporus lay egg

    2Thank You

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    • Posted by Lapyntngen Kharnaior 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shivam Chaurasia 6 years, 7 months ago

    It is pneumonia .because person affected wirh it trembling with high coldness , fever also raised up.

    0Thank You

    ANSWER

    • Posted by Janhavi Bover 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Vanshu Jais 6 years, 7 months ago

    In the mid period of menstrual cycle ( about day 14 ) when there is a maximum secretion of Leutinizing Hormone (LH) by anterior pituitary is termed as LH surge .

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Luteinizing hormone is a hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH triggers ovulation and development of the corpus luteum. In males, where LH had also been called interstitial cell–stimulating hormone, it stimulates Leydig cell production of testosterone.

    1Thank You

    Navjot Kaur 6 years, 7 months ago

    Rapid secretion of LH leading to its maximum level during the mid cycle called LH surge. It induces rupture of graaffian follicle &release of ovum (ovulation ).

    1Thank You

    ANSWER

    • Posted by Janhavi Bover 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    Amrita Mohanty 6 years, 7 months ago

    It is 3n triploid

    0Thank You

    Karan Mishra 6 years, 7 months ago

    The ploidy of PEN is 3n i.e triploid

    0Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    It is triploid(3n).

    1Thank You

    Navjot Kaur 6 years, 7 months ago

    PEN is triploid.

    2Thank You

    ANSWER

    • Posted by Mhander.D Soratiya 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Each DNA sequence that contains instructions to make a protein is known as a gene. The size of a gene may vary greatly, ranging from about 1,000 bases to 1 million bases in humans.

    0Thank You

    ANSWER

    • Posted by Renuka Singh 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Vanshika Tyagi 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Tanvi Toor 6 years, 7 months ago

    Explore internet -gather information regarding ur topic....

    0Thank You

    Purnima Kumari 6 years, 7 months ago

    By usin your hands

    0Thank You

    Aman Yadav 6 years, 7 months ago

    Whats typical in this

    0Thank You

    ANSWER

    • Posted by Saveksha Kadian 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Sakshi Sharma 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Tanvi Toor 6 years, 7 months ago

    It may be difficult but not impossible.... Just read each n every line of ncert biology,diagrams,tables very carefully nd as a result u will rock in neet,aiims n in jipmer too???

    0Thank You

    Vanshika Tyagi 6 years, 7 months ago

    Bcz In every line of NCERT to make questions in simple ways or difficult way. It's a very useful book for neet, aiims 90% paper make by the ncert book

    0Thank You

    ANSWER

    • Posted by Harish Khan 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Karan Mishra 6 years, 7 months ago

    Syngamy +triple fusion = double fertilization

    0Thank You

    ANSWER

    • Posted by Anjana Devi Anju 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    Net se check kr lo sara syllabus mil jaye ga vha se

    0Thank You

    Rupam Raj 6 years, 7 months ago

    What is genetics

    0Thank You

    Muzammil Haque 6 years, 7 months ago

    Hii

    1Thank You

    ANSWER

    • Posted by Tarun Kumar 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shivam Chaurasia 6 years, 7 months ago

    3

    0Thank You

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    • Posted by Kamlesh Kumar 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 7 answers

    Nishu Goyal 6 years, 7 months ago

    Uncontrolled cell division forming tumour intrupting in body function is cancer

    0Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 7 months ago

    for more u can go through refresher. ?

    1Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 7 months ago

    ● Treatment of cancer ○ Radiotherapy − Tumour cells are irradiated to death. Also, proper care is taken for protecting surrounding normal tissues. ○ Chemotherapy − Drugs specific for particular tumours are used to kill cancer cells. They have side effects such as hair loss, anaemia, etc. ○ Immunotherapy− Biological response modifiers such as α- interferons are used. They activate the immune system of patient and helps in destroying the tumour.

    2Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 7 months ago

    ➡️Diagnosing cancer ○ Biopsy and histopathological studies ○ Biopsy − Suspected tissue is cut into thin sections and examined microscopically ○ Radiography, CT scan (computed tomography), and MRI (Magnetic resonance imaging) are techniques of diagnosing cancers. ○ C T Scan − 3-D imaging of internals of an organ is generated by X-rays. ○ MRI Scan − Pathological and physiological changes in a living tissue are detected by using magnetic fields and non-ionising radiations. ○ Immunological and molecular biological diagnostic techniques can all be used to detect cancers. ○ Identifying certain genes, which make an individual susceptible to cancers, can help to prevent cancers.

    2Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 7 months ago

    Causes of cancer ○ Carcinogens − Physical, chemical, and biological agents that cause cancer Example - ionizing radiations (X-rays and gamma rays), non-ionizing radiations (UV) ○ Oncogenic (cancer-causing) viruses − They have viral oncogenes (cancer-causing genes). ○ Sometimes normal genes in our body called proto-oncogenes get converted into cellular oncogenes that cause cancer.

    1Thank You

    Kamlesh Kumar 6 years, 7 months ago

    Explain all topic with details

    0Thank You

    Ďãřşháñăã Yadav ? ? ? 6 years, 7 months ago

    ● The process of development of cancer is called oncogenic transformation. ● Normal cells have the property of contact inhibition (stoppage of growth on coming in contact with other cells), but cancer cells lose this property. ● As a result, cancer cells divide continuously to give rise to mass of cells (tumours). ● Tumours are of 2 types − benign and malignant. ● Benign tumours − Remain confined to their original location and do not spread ● Malignant tumours− These exhibit metastasis i.e., the cells sloughed from such tumours reach distant sites and wherever they reach, new tumour is formed. ● Malignant tumours actually represent cancer. The cells actively divide, grow, and starve the normal cells of vital nutrients.

    5Thank You

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    • Posted by Kamlesh Kumar 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 5 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    10-13 years

    0Thank You

    Srishti Choudhary ✍⏳ 6 years, 7 months ago

    Acc to NCERT...the life span of dog is...20 to 30 yrs...bt normally we know that....only 10- 13 yrs...

    0Thank You

    Kamlesh Kumar 6 years, 7 months ago

    Which was correct

    0Thank You

    Kamlesh Kumar 6 years, 7 months ago

    My teacher said 12 to 15

    0Thank You

    Tarun Kumar 6 years, 7 months ago

    20-30years

    0Thank You

    ANSWER

    • Posted by Kalpana Jha 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shivam Chaurasia 6 years, 7 months ago

    Yes because we are crossing two dna thread which on blotting produces polymorphism.

    0Thank You

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    • Posted by Prathiba Elumalai 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Shivam Chaurasia 6 years, 7 months ago

    By haploid -diploid method

    0Thank You

    Tanvi Toor 6 years, 7 months ago

    The process is parthenogenesis.

    0Thank You

    Navjot Kaur 6 years, 7 months ago

    Drones are developed by the process of PARTHENOGENESIS .In this process drones are developed by unfertilized egg having 16 chromosomes (by mitosis ).If this egg is fertilised than it forms female honey bee. (by meiosis )having 32 chromosomes.

    2Thank You

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    • Posted by Ephidakahi Myrten 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    https://www.wedrawanimals.com/pdftutorial_download.php?path=5/kangaroo-rat

    0Thank You

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    • Posted by Komal Shekhawat 6 years, 7 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    Komal Shekhawat 6 years, 7 months ago

    Thank u all for telling me the answer

    1Thank You

    K@Łp@N@ $Øđh!?? 6 years, 7 months ago

    A pedigree chart is a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors from one generation to the next, most commonly humans, show dogs, and race horses.

    2Thank You

    Tarun Kumar 6 years, 7 months ago

    Analysis of inheritance pattern of Mendelian disorder for 2or more than two generations is called pedegrre analysis, based on this study,a chart is prepared using certain symbols is called pedigree chart or family chart

    3Thank You

    Avantika Tayal 6 years, 7 months ago

    It is basically the other name of family tree.in other words it is a chqrt showing the flow of a particular disease from parents to offspring.

    2Thank You

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