the parent cell.
Before a cell divides, its DNA is replicated (duplicated.) Because the two strands
of a DNA molecule have complementary base pairs, the ... If the two strands of a
DNA molecule are separated, each can be used as a pattern or template to ...
Each template and its new complement together then form a new DNA double
In fact, if you lined up each molecule of DNA in one cell end to end, the ... The
specific base pairing provides a way for DNA to make exact copies of itself. Each
half of the original DNA still has a base attached to its sugar-phosphate
backbone. ... New strands attach to both sides of the original DNA, making two
identical DNA ....
Feb 5, 2011 ... CHROMOSOMES; How is DNA passed on to new cells? ... In DNA, the sugar
molecule happens to called deoxyribose, hence the ... Notice how the chemical
structure of each base allows it to line up perfectly with its pair, but not with any ...
replicates its DNA and then divides into two identical daughter cells.
Because many identical RNA copies can be made from the same gene, and each
... All of the RNA in a cell is made by DNA transcription, a process that has ... to
expose a new region of the template strand for complementary base-pairing. ......
Instead, the mutation typically creates a new pattern of splicing (Figure 6-35).
They are polymers (long chain molecules) made from nucleotides. ... A
polynucleotide has a free phosphate group at one end and a free OH group at
the other end. ... The bases therefore form base pairs, which are like rungs of a
ladder. ... DNA is copied, or replicated, before every cell division, so that one
identical copy can ...
More recently, close relatives of these proteins have been discovered and ... This
heteroduplex region can be thousands of base pairs long; we explain ... As a
result, new recombinant DNA molecules (recombinant chromosomes) are
generated. ... In meiosis, this process causes each chromosome in a germ cell to
contain a ...
Cellular DNA molecules can be as long as several hundred million nucleotides.
... All nucleotides have a common structure: a phosphate group linked by a ....
The strands are held in precise register by a regular base-pairing between the
two strands: ... The x-ray diffraction pattern of DNA indicates that the stacked
bases are ...
This section examines the mechanism of DNA replication. ... imposed by the DNA
structure are strict, each exposed base will pair only with its complementary base.
... The Watson-Crick model would produce the first (semiconservative) pattern. ...
They grew E. coli cells in a medium containing the heavy isotope of nitrogen ...
The human body contains about 100 trillion cells, each working together in a
complex symphony of interactions. ... (A chromosome pair has identical banding.)