Question

Difference between typical and special loops in lampbrush chromosoms

Answer 1

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Here is your answer :-


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❄ There are difference between typical and special loops in lampbrush chromosoms :-

✨The relationship between chromomere-loop structures and transcriptional units is
of basic interest for the understanding of chromosomal organization in eukaryotes
(cf. Beerman, 1972; Lima-de-Faria, 1975).


✨We have therefore carried out a detailed electron-microscopic study on spread lampbrush chromosomes from various amphi- bian oocytes and from primary nuclei of various dasycladacean green algae.


✨Our observations of differences in the numbers and modes of arrangement of transcrip-tional units in different loops have led us to classify the individual loops according to the morphology of the transcriptional units.


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Answer 2

Answer:

Lampbrush chromosomes-

(a) Lampbrush chromosomes were

described by Ruckert in 1892.

(b) These are present in the primary

oocyte nucleus of vertebrates as well as

invertebrates.

(c ) There are many loops extending out

of it which gives it the appearance of a

brush