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    • Posted by Shubhangi Sharma 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shubham Sharma 7 years, 5 months ago

    250 Compartments = 250 testicular lobules

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    • Posted by Manu Sharma 7 years, 6 months ago

    CBSE > Class 12 > Biology
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    • Posted by Monika Singh 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Debasmita Jamuda 7 years, 6 months ago

    Adaptive radiation or divergent evolution is when organisms of same origin move to different habitats and adapt to live in that particular habitat. They have homologous organs. Parallel evolution is the evolution in which 2 diff species of almost similar origin go for simultaneous convergent evolution in a specific geographical area.

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    • Posted by Vishal Thakur 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Hina Sagar 7 years, 5 months ago

    Oviparous- development of zygote take place outside the body of organisms and lay fertilized of unfertilized eggs. For example- reptiles and birds. Viviparous- development of zygote take place in side the body of organisms and produce young ones. For example- human,dog,horse etc.

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    • Posted by Jaya Gurjar 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Pratap Dash 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Udit Daimary 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Hemant Tagore 7 years, 6 months ago

    CBSE > Class 12 > Biology
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    • Posted by Kavya Verma 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Shubham Sharma 7 years, 6 months ago

    It is a type of back cross in which F1 progeny is crossed with the recessive parent in order to know whether the given phenotype of the F1 progeny is heterozygous or homozygous

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    • Posted by Riya Trivedi 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Puneet Singh 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Abhishek Sharma 7 years, 6 months ago

    Hydra is animal.

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    • Posted by Vivek Gautam 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Monika Singh 7 years, 6 months ago

    It is a type of back cross in which the f1 generation is crossed with the reccesive parent in order to know the genotype of f1 generation

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    • Posted by Vivek Gautam 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Vicky Sahu 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Deepak Kumar 7 years, 6 months ago

    In the Posterior pituitary gland.

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    • Posted by Shruti Khatri 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Harsh Kumar 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Suman Kumar 7 years, 6 months ago

    CBSE > Class 12 > Biology
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    • Posted by Sanjana Bairwa 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Faizal Shahi 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Himanshi Lingwal 7 years, 6 months ago

    Phenotypes are those chahracters which can be seen wheares later are those characters which can not be seen but they are present on the body

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    • Posted by Divyanshi Mishra 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Yogita Ingle 7 years, 6 months ago

    Cloning

    It is a type of asexual reproduction which involves the creation of an exact copy of a biological entity.

    *Cloning involves the process of forming a cell or a complete individual from a body cell.

    *A clone is created by inserting the complete genetic material of a regular body cell from a donor into a recipient.

    *Cloning is done in many animals including sheep, cattle, pigs etc. But for the first time cloning of sheep was successful in producing a clone of the parent sheep.

    Let us observe the process of cloning with an example

    Cloning in sheep
    Dolly was the first cloned mammal, and is genetically identical to its parent sheep.

    *Sir Ian Wilmut from Roslin Institute in Edinburgh, Scotland created Dolly.

    *Egg from A was taken and enucleated.

    *Nucleus of a body cell was selected from B and was injected into enucleated cell of A.

    *This new cell of A with nucleus from B is placed into womb of A. 

    *It developed into a normal baby sheep which was named as Dolly.

    *Dolly was found to be exactly similar to B from which nucleus was taken.

    *Dolly was termed to be a 'Clone' and the process was referred to as 'Cloning'.

    *Dolly was developed from the cell of A and in the womb of A. But she resembled B which donated the nucleus.

    *Cloning involves certain abnormalities. Dolly suffered from arthritis. Dolly also was suspected to have developed lung tumour.

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    • Posted by Baishnavi Rathoer 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Faizal Shahi 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Rohit Soni 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Saksham Guleria 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Samir Mughal 7 years, 6 months ago

    Transfer if DNA into RNA

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    • Posted by Abhishek Pathak 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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    • Posted by Anupama Keshri 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Athmika Prajesh 7 years, 6 months ago

    A segment of dna which produces an amino acid

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    • Posted by Sahanaz Sahin 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Harish Nagar 7 years, 6 months ago

    Because it introduce variation among individual of a species

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    Krishna Mohan Pattnayak 7 years, 6 months ago

    Meiosis involves the reductional division for maintaining the ploidy level in diploid organisms. Meiosis is also imp becoz it promotes variation as it involves crossing over of homologous chromosomes ultimately leading to variation.

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    • Posted by Goru Hbsc 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anand Kumar 7 years, 6 months ago

    First of all your spelling is wrong its "mitosis" not metosis. OK And mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth. "the single large egg cell subdivides by repeated mitosis"

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    • Posted by Sneha Kri 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anand Kumar 7 years, 6 months ago

    Scientists have discovered a wealth of evidence concerning human evolution, and this evidence comes in many forms. Thousands of human fossils enable researchers and students to study the changes that occurred in brain and body size, locomotion, diet, and other aspects regarding the way of life of early human species over the past 6 million years. Millions of stone tools, figurines and paintings, footprints, and other traces of human behavior in the prehistoric record tell about where and how early humans lived and when certain technological innovations were invented. Study of human genetics show how closely related we are to other primates – in fact, how connected we are with all other organisms – and can indicate the prehistoric migrations of our species, Homo sapiens, all over the world. Advances in the dating of fossils and artifacts help determine the age of those remains, which contributes to the big picture of when different milestones in becoming human evolved. Exciting scientific discoveries continually add to the broader and deeper public knowledge of human evolution. Find out about the latest evidence in our What’s Hot in Human Origins section.

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    • Posted by Bishal Mainali 7 years, 6 months ago

    CBSE > Class 12 > Biology
    • 0 answers
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