Lampbrush chromosome
(Science: cell biology) large chromosomes (as long as 1mm), actually meiotic bivalents, seen during prophase of the extended meiosis in the oocytes of some amphibia.
segments of dna form loops in pairs along the sides of the sister chromosomes, giving them a brush like appearance. These loops are not permanent structures but are formed by the unwinding of chromomeres and represent sites of very active rna synthesis.
Dictionary > Lampbrush chromosome
You will also like...
Chromosome Mutations
Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..
Genetics and Evolution
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis
The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..
Geological Periods
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..
Cell Respiration
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..
Sensory Systems
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..