” said Daban. “A multilayer organization of chromatin provides a structural framework that can support the epigenetic mechanisms of gene regulation and is compatible with DNA replication and repair, and chromosome duplication.”
This study shows that chromosome images obtained from typical banded karyotypes and from different multicolour cytogenetic analyses can be used to gain information about the internal structure of chromosomes. Chromatin bands and the connection surfaces in sister chromatid exchanges and in cancer ...
What determines the heredity of the 46 chromosomes? Why do animal cells undergo Meiosis? What is a chromosome and its function? Why can chromosomes only be seen when a cell is dividing? What is the importance of mitosis? Why might a cell need to replicate all of its chromosomal DNA?
Explain the difference between chromatins and chromatids, and what part of the DNA each of them make up? What role do they have in the structure of DNA?Answer and Explanation: Chromatin is spread out within the nucleus...
Intermale aggression tested in two procedures, using four inbred strains of mice and their reciprocal congenics: Y chromosomal implications. Indications of a role for the nonpseudoautosomal region of the Y chromosome (Y NPAR ) in intermale attack behavior have been demonstrated by Maxson's gro.....
The obvious genetic differences between males and females lie in the fact that females have two X chromosomes, whereas males have a Y and a X chromosome. From an endocrine point of view sex hormones influence physiology in both sexes with changing roles during human life, from childhood to ado...
Describe the structure on RNA polymerase II that is most responsible for processivity. How is processivity related to the functions of RPB4/7? Identify the function of the protein: DNA polymerase I (exonuclease). Describe the role of RNA polymerase in the transcription proc...
For bacteria that are F⁺, Hfr, F', and F⁻ perform or answer the following. Describe the results of conjugation (i.e., changes in the recipient and the exconjugant) that allow detection of the state of the F factor in a donor strain. ...
As longer chromosomes harbour more genes, a linear relation- ship between length of a chromosome and the estimate of variance explained by that chromosome is consistent with the hypothesis that many genes of small effect contribute to genetic variation of the trait. The s.e. of the estimates ...
Explain hemoglobin's structure, function, and synthesis. Explain the basis of ABO blood types. Patients who have hemoglobin SS as well as a mutation that produces hereditary persistence of fetal hemoglobin have few symptoms of sickle cell disease. Explain why this is the case. ...