Consult Figure 2. Would you consider this figure to be depicting euchromatin, or heterochromatin, both, or neither? Explain your choice.

Describe constitutive heterochromatin and facultative heterochromatin. Based upon this information, what would you predict would happen during the embryonic development of an organism if some regions of facultative heterochromatin were changed to constitutive regions? Answer in detail.

The average length of double helix in human chromosome is 3.8cm. 1. Approximately how many base pairs would be present in such a chromosome?____________(no spaces and comma) 2. If the strand of nucleotide is 200,000 bp, give the length in micrometers.__________(no spaces)

What is the molecular basis of genetic information?   base sequences   sugar-phosphate backbone   chromatin supercoiling   phospholipids

Heterochromatin and Euchromatin Have Which Different Histone modifications

- Shown below is an R loop prepared for electron microscopy by annealing a purified eukaryotic messenger RNA with DNA from a genomic clone containing the full-length gene corresponding to the mRNA.

Explain why a particular gene might be present in heterochromatin in one cell and euchromatin in another.

5'-GCGGTACGTTACGGCTTTACTGACCTGCAGGC-3' A. Convert this to a double strand DNA molecule by writing the complementary sequence. Be sure to correctly label the ends of the double stranded molecule B. Pick one of the two strands and write the sequence of an RNA molecule that could be transcribed from it. Again, you must correctly label the ends of the molecule.