The domestic cat genome contains 2.9×109 base pairs. the length of linker dna in mammals is 50 base pairs. approximately how many nucleosomes are required to organize the 10-nm-fiber structure of the genome?

Number of nucleosomes in bp is equal to

Explanation:

For wounding one nucleosome, total length of DNA required is equal to bp

The length of  linker DNA in mammals is equal to bp

Thus , the total length of DNA that confides between two nucleosome is equal to the sum of wounding length of DNA and the linker length

bp

Thus, in bp length of DNA, the total number of nucleosomes is equal to

Thus, number of nucleosomes in bp is equal to

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

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