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DNA replication occurrs through a process called mitosis. The stages of mitosis are (I)PMAT.
- Interphase
In the G1 phase, protein synthesis occurrs and mRNA runs along the chromosomes. In the S phase, DNA polymerase runs along the chromosomes/chromatids and creates complementary strands of DNA. In the G2 phase, the 23 chromosomes all have sister chromatids.
2. Prophase- Chromosomes condense, spindle fibers form, and the nuclear membrane disintegrates. (23 chromosomes/46 chromatids)
3. Metaphase- the chromosomes line up in the middle of the cell and spindle fibers from the centrioles connect to the chromosomes at the kinetochores. (23 chromosomes/46 chromatids)
4. Anaphase- Sister chromatids are pulled apart by the spindle fibers to each pole of the cell. (23 chromosomes/46 chromatids)
5. Telophase- nuclear envolopes form around the chromatids at each pole, the spindle fibers reduce, the chromatids decondense. (46 chromosomes/ 46 chromatids)
Then cytokinesis occurrs to split up the cell into two cells.
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A general scheme for genetic engineering is?
obtain DNA with the desired gene, cut the DNA into pieces, copy the pieces of DNA, identify copies of the desired gene, and transfer the desired gene to the recipient organism. for Plato the answer is A. not B. C. or D.
Why cant sister chromatids have different alleles?
Sister chromatids dont over cuz they dont look it up lmfao
What is genetic engineering in animals?
GE is removing DNA from selected animals then adding new genes (which posses different traits) into the DNA itself before implanting the cell into the host
Before DNA could definitively be shown to be the genetic material in cells scientist had to show that it could?
b. it could carry and make copies of information
What impact did the discovery of DNA as a genetic material have on the early science community?
At first, Clark and Watson were not noticed for their work. It was not until the fundamentals such as how DNA duplicated itself, and how it created the essential proteins needed to keep us alive.
Process by which DNA copies itself?
Replication! 1) DNA splits 2) DNA copies 3) left with 2 copies of DNA! :)
When DNA copies itself what is this process called?
DNA Replication :)
The process by which DNA copies itself is called?
DNA replication
Who does DNA make copies of itself?
meosis
What is the process in which DNA copies itself?
Replication
What separates in DNA when it copies itself?
The enzyme
The process by which a DNA molecule copies itself?
Replication
What is it called when DNA copies itself incorrectly?
regeneration
Process when DNA copies itself?
it is called meiosis
DNA copies itself?
Sort of. Many books describe it that way. It would be more accurate to say that a system of RNA's and proteins uses a strand of DNA as a template to make a copy.
What small DNA strand makes a copy of itself?
A virus is a small strand of DNA or RNA that copies itself.
What happens in S phase?
DNA makes copies of itself
