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Egg Envelopes
Like any other cell, all the eggs are covered by the cell membrane or plasmalemma It is with two layers of about 50 A? (unit membrane) separated by a gap of 60 A?. In addition to plasmalemma, the eggs of practically all animals are surrounded by special egg envelopes (or egg membranes).
Based on their origin, types of egg envelopes are
Starch gelatinization Undamaged starch granules are insoluble in cold water but can imbibe water reversibly i.e. they can swell slightly and then return to their original siz
In a follow up to Alfred Sturtevant's studies on recombination in the fruit fly, Seymour Benzer used complementation studies of bacteriophage mutants to verify where recombination
EVIDENC E IN FAVOUR OF THE MUTATION THOERY - Mutation theory can explain both progressive and retrogressive evolution and the occurrence of both changed and unchanged forms.
Explain Metastatic carcinoma Metastatic carcinoma:- Cancer that can be transferred from one part of the body to other unrelated parts.
Define the term - Stimulus Stimulus and response characteristics of the tests themselves, as well as of the test instructions, become exceedingly important considerations. In g
what is life process
What is yellow fever? Yellow fever is a viral infection that happens mainly in Central Africa and in the Amazon region of South America. It is prevented through vaccination and
How different are gymnosperms from bryophytes and pteridophytes? Gymnosperms are not cryptogamic as bryophytes and pteridophytes are. They are phanerogamic and so they form flo
Extracted chlorophyll pigments If we take chlorophyll molecule in a test tube and provide 2 CO and water and expose the mixture to sunlight, glucose is not formed. If we
How could know oxoid latest product lot/batch
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