Recent questions tagged botany

The genotypic ratio of the Mendel's law can be expressed by

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The recessive allele does not get expresssed in the F1 but is expressed in the F2. This can be explained on the basis of

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whether the alleles of a plant are homozygous or heterozygous can be differentiated

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What we call genes today, Mendel called them as ___

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The first experiment of crossing a tall and dwarf P.sativum by Mendel explained _ while it did not explain the phenomenon of _

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The removal of anthers is called

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The stage between first and second meiotic divisions with no DNA synthesis is called _ and is __-lived

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The figure below represents what stage of a cell cycle ?

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Which of the following is true? Meiosis a. results in conservation of chromosome number across generations b. reduction of chromosome number c. increases variability in species d. important for cell repair

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Which of the following is NOT true? Pachytene is

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the diplotene stage is characterised by the presence of

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The condition where the complex formed by the pair of homologous chromosome adjointed at a synapse is called

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The beginning of the pairing of chromosomes occurs at

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which of the following is true? Mitosis a. is associated with cell repair b. occurs in the apical and lateral cambium of a plant c. functions to restore the nuclear-cytoplasmic ratio d. it occurs during gametogenesis in both plants and animals

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multinucleate condition leads to the formation of ___ in coconut

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Match the following:

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Decarboxylation of an aminoacid results in an____

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The pitch of the DNA is ____

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Match the following:

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Chitin is a_ and cellulose is a __

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How is starch different from cellulose

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which of the folowing is not true of proteins

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Lecithin is an example of

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Arachidonic acid is

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_ give rise to spindle apparatus during cell division in animal cells and _ form the basal body of cilia or flagella.

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Name the type of chromosome :

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The chromosome contains a constriction called and shows the presence of disc shaped structures in the sides called __

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Label parts A,B,C and D

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The mitochondria divides by

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Major regions of an intergral membrane protein are _ while that of a peripheral membrane protein are __

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In the plasma membrane, the orientation of the lipids is such that

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which of the following is not an example for inclusion body

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A person with AIDS becomes susceptible to infections due to

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The HIV upon entering human body, first attacks

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the major function of the lymph nodes is

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spleen majorly consists of

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To reduce the symptoms of allergy,patients are administered

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During an allergic response ___ is/are released from the mast cells

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The first recombinant DNA vaccine was made available for

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which of the following is true about passive imunity: a. preformed antibodies may be injected to the patient b. attenuated organisms are administered. c. it is based on the concept of memory

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Graft rejection occurs due to

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Each antibody has ___ chains

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Highly intensified secondary response is also called as

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Innate immunity is and acquired immunity is _

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virus infected cells produce proteins called

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Macrophages and monocytes destroy the foreign pathogens by

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Aedes moquito is the carrier for

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Diseases like polio and small pox are under control these days due to advancements in

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Ringworm infection is caused by

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The vector in the case of amoebic dysentry is

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