A typical eukaryotic chromosome found in humans contain about 100 million bp of
ID: 52066 • Letter: A
Question
A typical eukaryotic chromosome found in humans contain about 100 million bp of DNA. As described in Chapter 9, 1 bp of DNA has a linear length of 0.34 nm.
A. what is the linear length of the DNA for a typical human chromosome in micrometers?
B. what is the linear length of a 30nm fiber of a typical human chromosome?
C. Based on your calculation of part B, would a tyupical human chromosome fit inside the nucleus (with a diameter of 5 um) if the 30 nm fiber were stretched out in a lineoar manner? if not, explain how a typical human chromosome fits inside the nucleus during interphase.
Explanation / Answer
A. linear length of the DNA for a typical human chromosomes in micrometers ;
answer ; [length of the 1base pair][number of base pair per cell] [number of cells in the body ]
=[0.34*10-9][6*109][1013] = 2.0*1013 meters =2000000 micrometers .
b.what is the linear length of a 30nm fiber of a typical human chromosome?
the linear length of the typical chromosome will be around 8.3 micrometers
how a typical human chromosome fits inside the nucleus during interphase.
answer ; cellular DNA is tightly packed with various proetins -DNA complexes called chromatin where mass of protein and chromatin are equal . usually chromatin will tighlty packed to form the chromosomes which then fit into nucleus ,in interphase the chromosomes are less tightly packed ,this looser configuration is important because it permits transcription to takes place . the uncondensed chromosomes occupy the specified place in the nucleus which are called chromosome territories which is imporatnat for the gene expression . chromatin are coiled around the histone proteins to form the nucleosome .chromosomes form the RAB1 configuration where centromeres and telomeres are said to be in opposite direction .chromosomes in interphase are said to be lengther than the chromosomes in other phases
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.