Recent questions tagged zoology

PCR can be used to detect

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To treat ADA the functional cDNA is added to ___

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The first recombinant insulin was synthesised as

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the pro-insulin differs from the active form of insulin by

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Which of the following is true about RNAi techonology : a. strategy for gene silencing b. based on complementarity of the nucleotides c.inhibition occurs at the transcription level d. Inhibition occus at translation level e. occurs as a natural defense mechanism in prokaryotes

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The infection by Meloidegyne incognitia was handled by __ methodology

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Bt toxin is encoded by __ gene

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Cotton bollworms are controlled by while corm borers are controlled by

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Match the following

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The insecticidal mechanism of bt toxin is

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Bt toxin is acquires the active form from an inactive protoxins at

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The presence of bubbles in a bioreactor

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Multiple copies of a gene of interest are synthesised in vitro by

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The last step in the procedure to isolate a DNA irrespective of the source of the DNA would be

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Match the following

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In the B-galactosidase assay: recombinant transformed cells are _ colored while non-recombinant transformed cells are color

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Normal E.coli cells are resistant to

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Which of the following is true about the the origin of replication: a. responsible for the replication of any piece of DNA attached to it b. controls the copy number of the inserted gene c.it is the sequence of DNA from where transcription begins

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Arrange A, B, C, D and E with the smallest first:

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I cut the source DNA with ECoRI and plasmid DNA with HIndII and add DNA ligase and insert it into Ecoli. But Ecoli fails to express my gene of interest because

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The restriction enzymes

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Overhanging regions of DNA that has been acted upon by restriction is enzymes are called sticky ends as they form __ with the complementary strand

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Multiple identical copies of a template DNA are made by

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Given the following statements:

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In artificial insemination (AI) technique: (i) the semen collected from the husband (ii) the semen collected from a healthy donor (iii) is artificially introduced into the ****** of the female (iv) is artificially introduced into the uterus of the female Regarding (i), (ii), (iii) and (iv) :

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GIFT: Transfer of an ovum collected from a donor (i) into the fallopian tube of another female (ii) who can produce one (iii) but can not provide suitable environment for fertilisation (iv) but can provide suitable environment for further development Regarding (i), (ii), (iii) and (iv) :

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1. Hepatitis–B and HIV can be transmitted from an infected mother to the foetus too. 2. Hepatitis B virus transmission from mother to unborn child is called vertical transmission. 3. Before semen donation for artificial insemination the screening of donor for HBV is not usually needed Regarding 1,2 and 3 :

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Class – Mammalia : 1. Heart is four- chambered. 2. Respiration is by lungs. 3. They are poikilothermous. Regarding 1,2 and 3:

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Class – Amphibia : 1. The amphibian skin is dry. 2. They do not have scales. 3. They don't have eyelids. Regarding 1,2 and 3:

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Regarding Class Cyclostomata : 1. They have paired fins 2. Their body is devoid of scales. 3. Cranium and vertebral column are bony. 4. Circulation is of closed type Regarding 1,2,3 and 4:

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Regarding Aschelminthes: 1. Sexes are separate 2. They are monoecious. 3. Often females are longer than males. Regarding 1,2 and 3:

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Regarding Platyhelminthes : 1. Planaria possess high regeneration capacity. 2. Tapeworm is Taenia and it is an intestinal parasite. 3. Fasciola hepatica is Liver fluke Regarding 1,2 and 3:

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1. Cnidarians have a central gastro-vascular cavity 2. They have a single opening, mouth or hypostome. 3. Digestion is extracellular 4. Digestion is intracellular. Regarding 1,2,3 and 4:

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1. Archaebacteria differ from other bacteria in having a different cell wall structure 2. Methanogens live in marshy areas and halophiles live in hot springs. 3. Methanogens are present in the gut of several ruminant animals

asked Mar 20, 2014 by pady_1

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1. Families are characterised only on the basis of reproductive features of plant species 2. Lion, tiger, leopard is put along with cats and dogs in the family Felidae 3. Three different genera Solanum, Petunia and Datura are placed in the family Solanaceae

asked Mar 20, 2014 by pady_1

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1. Sperms released from the seminiferous tubules, are transported by the accessory ducts. 2. Secretions of epididymis, vas deferens, seminal vesicle and prostate are essential for maturation of sperms. 3. Secretions of epididymis, vas deferens, seminal vesicle and prostate are essential for motility of sperms. Regarding 1,2 and 3 :

asked Jan 6, 2014 by pady_1

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Class – Amphibia : 1. Sexes are separate. 2. Fertilisation is external. 3. They are viviparous 4. Development is direct. Regarding 1,2,3 and 4:

asked Jan 6, 2014 by pady_1

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Regarding Class – Cyclostomata : 1. Cyclostomes are marine 2. But they migrate to fresh water for spawning . 3. After spawning, they die within a few days. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

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1. Agnatha includes Class Cyclostomata. 2. Tetrapoda includes Pisces, Amphibia, Reptilia, Aves and Mammals 3. Pisces includes Chondrichthyes and Osteichthyes. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

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Regarding Aschelminthes: 1. Sexes are separate 2. They are monoecious. 3. Often females are longer than males. Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

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Regarding Platyhelminthes : 1. Planaria possess high regeneration capacity. 2. Tapeworm is Taenia and it is an intestinal parasite. 3. Fasciola hepatica is Liver fluke Regarding 1,2 and 3:

asked Jan 6, 2014 by pady_1

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Regarding Oogenesis choose the incorrect one :

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Follicle stimulating hormone (FSH) :

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Luteinising hormone (LH) :

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The spermatogonia -

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1. The enlarged end of * called the glans * 2. It is covered by a loose fold of skin called foreskin. Regarding 1 and 2 :

asked Jan 3, 2014 by pady_1

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Choose and fill in the blanks in respective order: The seminiferous tubules of the testis open into the ____ through _ . The _ leave the testis and open into ______ located along the posterior surface of each testis.

asked Jan 3, 2014 by pady_1

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Intra cytoplasmic sperm injection (ICSI) is :

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All of the following are untreatable STDs except :

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All of the following are treatable STDs except :

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