Fluid mosaic model of cell membrane was put forward by
Danielli and Davson
Singer and Nicolson
Garner and Allard
Watson and Crick
Acetabularia used in Hammerling's nucleocytoplasmic experiments is
unicellular fungus
multicellular fungus
unicellular uninucleate green alga
unicellular multinucleate green alga
Meiosis-I is reductional division. Meiosis-II is equational division due to
pairing of homologous chromosomes
crossing over
separation of chromatids
disjunction of homologous chromosomes
Ribosomes were discovered by
Golgi
Porter
De Robertis
Palade
Magnification of compound microscope is not connected with
numerical aperture
focal length of objective
focal length of eye piece
tube length
Best stage to observe shape, size and number of chromosomes is
interphase
metaphase
prophase
telophase
Experiments on Acetabularia by Hammerling proved the role of
cytoplasm in controlling differentiation
nucleus in heredity
chromosomes in heredity
nucleo-cytoplasmic ratio
Electron microscope has a high resolution power. This is due to
electromagnetic lenses
very low wavelength of electron beam
low wavelength of light source used
high numerical aperture of glass lenses used
In salivary gland chromosomes/polytene chromosomes pairing is
absent
occasional
formed between non-homologous chromosomes
formed between homologous chromosomes
Mitotic anaphase differs from metaphase in possessing
same number of chromosomes and same number of chromatids
half number of chromosomes and half number of chromatids
half number of chromosomes and same number of chromatids
same number of chromosomes and half number of chromatids
