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    • Posted by Manu Yadav 4 years, 1 month ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sia ? 4 years, 1 month ago

    Mitosis Meiosis
    Interphase
    Each chromosome replicates. The result is two genetically identical sister chromatids (However, do note that interphase is technically not a part of mitosis because it takes place between one mitotic phase and the next) Chromosomes not yet visible but DNA has been duplicated or replicated
    Prophase
    Prophase –Each of the duplicated chromosomes appears as two identical or equal sister chromatids, The mitotic spindle begins to form. Chromosomes condense and thicken Prophase I – crossing-over recombination – Homologous chromosomes (each consists of two sister chromatids) appear together as pairs. Tetrad is the structure that is formed. Segments of chromosomes are exchanged between non-sister chromatids at crossover points known as chiasmata (crossing-over)
    Metaphase
    Metaphase -The chromosomes assemble at the equator at the metaphase plate Metaphase I Chromosomes adjust on the metaphase plate. Chromosomes are still intact and arranged as pairs of homologues
    Anaphase
    Anaphase – The spindle fibres begin to contract. This starts to pull the sister chromatids apart. At the end of anaphase, a complete set of daughter chromosomes is found each pole Anaphase I Sister chromatids stay intact. However, homologous chromosomes drift to the opposite or reverse poles
    Mode of Reproduction
    Asexual Reproduction Sexual Reproduction
    Occurrence
    All the cells Reproductive cells
    Function
    General growth and repair, Cell reproduction Genetic diversity through sexual reproduction
    Cytokinesis
    Occurs in Telophase Occurs in Telophase I and in Telophase II
    Discovered by
    Walther Flemming Oscar Hertwig

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    • Posted by Manu Yadav 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Seema Ladwal 3 years, 10 months ago

    Endometrium( outer) Mayometrium(middle) Perimetrium(inner)

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    • Posted by Jasika Agarwal 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Kartikey Mishra 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Snehil J@@T 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    Deepti Rani Gouda 4 years, 2 months ago

    Central dogma is the cyclic process in which the DNA converted to RNA by the process of transcription and then RNA to protein by the process of translation .

    2Thank You

    Royal Thakur ? 4 years, 2 months ago


    You realized your mistake ..?
    because I don't think so
    ..if you had realized then it's good .....
    .look bro these things are wrong specially on this app ...
    don't waste your time doing this nonsense because one day you will regret for all .... ......
    your parents had not educated you to doo this all .......
    "When we throw stone in water just for fun we don't even had a idea how deep it can goo"....
    Soo focus on career and studies leave this all..

    2Thank You

    Snehil J@@T 4 years, 2 months ago

    Thanks bro and srry for the mess I created.

    2Thank You

    Royal Thakur ? 4 years, 2 months ago


    The 'Central Dogma' is the
    process by which the
    instructions in DNA are
    converted into a functional
    product.

    2Thank You

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    • Posted by Akash Avinash 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Alok Yadav 4 years, 1 month ago

    *****

    0Thank You

    Abhishek Kast 4 years, 2 months ago

    Urethra meatus

    0Thank You

    Akash Avinash 4 years, 2 months ago

    ***** scotrum

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    • Posted by Md Shane Raza 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Akash Avinash 4 years, 2 months ago

    Except chapter 1 :7:9:14 and 16

    1Thank You

    Kritika Singh 4 years, 2 months ago

    Total 11 ch h syllabus me

    3Thank You

    Kritika Singh 4 years, 2 months ago

    Ch-2, 3,4,5,6,8,10,11,12,13,and15

    2Thank You

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    • Posted by Snehil J@@T 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Harshika Narwat 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Abhishek Kast 4 years, 2 months ago

    Monohybrid and dihybrid cross

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    • Posted by Alina Limboo 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sia ? 4 years, 2 months ago

    The tRNA molecules are called as adaptor molecules because they can bind with both the amino acids as well as RNA.

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    • Posted by Himanshi Kumari 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sia ? 4 years, 2 months ago

    The lactose operon is an operon required for the transport and metabolism of lactose in E.coli and many other enteric bacteria.

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    • Posted by Arvind Kandari 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Sia ? 4 years, 2 months ago

    a condition in which one or both of the testes fail to descend from the abdomen into the *******.

    1Thank You

    Prince Kumar Singh 4 years, 1 month ago

    Undescend testis in scortm

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    • Posted by Chirag Meena 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Prachi Agarwal 4 years, 2 months ago

    1. Asexual reproduction is uniparental while sexual reproduction is biparental. 2. In asexual reproduction the offspring produced are identical and morphological similar to their parents while in sexual reproduction they are not similar. 3. Asexual reproduction are common in low members of animals while sexual reproduction are common in higher organism having complex structure . 4. Asexual reproduction is fast and easy process but sexual reproduction is complex and slow process . 5 . Ex of asexual reproduction : amoeba, fungi , hydra etc . Ex of sexual reproduction : human

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    • Posted by Akhila A 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Alok Yadav 4 years, 1 month ago

    It reduce the cost ofhybrid crop production there is no segregation of character and new crop germinate

    0Thank You

    Alina Limboo 4 years, 2 months ago

    Apomictic seed don't need water to grow

    0Thank You

    Prachi Agarwal 4 years, 2 months ago

    They can grow without seed

    0Thank You

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    • Posted by Lal Hriattluanga 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Riu Verma 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Arvind Kandari 4 years, 2 months ago

    It occurs at puberty

    0Thank You

    Gyan Sager 4 years, 2 months ago

    In testis image male germ cell spermatogonia produce sperm by spermatogenesis that begins at puberty the spermatogonia present at the inner side of seminiferous tubule x vision and increase in the number which is spermatogonium contain 46 chromosome spermatogonia form spermato scientist and that undergoes miotic division to produce secondary spermatocyte having 23 chromosome are transfer into spermatozoa by process called sperme genesis

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    • Posted by Sandeep Kumar 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sanjay Kumar 4 years, 2 months ago

    Haploid:-Haploid describes a cell that contain single set of chromosome.. eg:- XX ( In human female). Deploid:- It describes a cell that contain both set of chromosomes i.e XY( both male and female set of chromosomes). Eg:- Human male.

    4Thank You

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    • Posted by Miku Kanwal 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Alina Limboo 4 years, 2 months ago

    Colostrum contains antibodies which is very important to new born baby to make the immune system strong

    0Thank You

    Oshin Gaggat 4 years, 2 months ago

    Clostrum provides antibodies in the new born baby to prevent from diseases

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    • Posted by Arsha Arif Arif 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Deepti Rani Gouda 4 years, 2 months ago

    Parthenogenesis is the process in which the offspring is produced by with out meating of parents . In this process the offspring is developed mainly by the help of UV rays and gama rays .

    1Thank You

    Gangothri V 4 years, 2 months ago

    Formation of zygote without fertilization is called parthenogenesis

    0Thank You

    Sanjay Kumar 4 years, 2 months ago

    Parthenogenesis is a form of reproduction in which an egg can develop into an embryo without being fertilized by a sperm. Parthenogenesis is derived from the Greek words for “virgin birth,” and several insect species including aphids, bees, and ants are known to reproduce by parthenogenesis.

    1Thank You

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    • Posted by Kifayat Ishaq 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sanjay Kumar 4 years, 2 months ago

    The applications of biotechnology include therapeutics, diagnostics, genetically modified crops for agriculture, processed food, bioremediation, waste treatment, and energy production.

    1Thank You

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    • Posted by Mahmood Momin 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sia ? 4 years, 2 months ago

    anatropous ovule - a completely inverted ovule turned back 180 degrees on its stalkanatropous ovule - a completely inverted ovule turned back 180 degrees on its stalk ovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilization

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    • Posted by Shinderpal Kaur 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Aditya Yadav 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Pradeep Kushwah 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Kv Vishwakarma 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 0 answers
    ANSWER

    • Posted by Kishore G 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Himani Rajput 4 years, 2 months ago

    If thymus is removed from a person's body then its immune system will become weak and will become more prone to infectious diseases

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    • Posted by Kuldeep Kumar 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Deepti Rani Gouda 4 years, 2 months ago

    The process in which the sperms of male and ovum of female get fused to produce a new offspring is known as fertilization

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    • Posted by Priyanshi Kumawat 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Preeti Dabral 4 years, 2 months ago

    Bamboo species are monocarpic i.e., flower generally only once in its life-time after 50−100 years.

    2Thank You

    Debraj Das 4 years, 2 months ago

    Bamboo

    1Thank You

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    • Posted by Utkarsh Tripathi 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 4 years, 2 months ago

    Dominant epistasis: when the dominant allele of one gene masks the effects of either allele of the second gene. Example 2: ABO blood groups: Bombay phenotype. Phenotypic ratios are 9:3:4 in F2. Pigment production (B) and subsequent incorporation (E) into the hair shaft are controlled by two separate genes.

    1Thank You

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    • Posted by Utkarsh Tripathi 4 years, 2 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 4 years, 2 months ago

    Epistasis is a phenomenon in genetics in which the effect of a gene mutation is dependent on the presence or absence of mutations in one or more other genes, respectively termed modifier genes. In other words, the effect of the mutation is dependent on the genetic background in which it appears.

    1Thank You

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