DNA
What does DNA contain?
traits (the genetic material)
What happens in the s-phase?
the DNA is replicated
How many Chromosomes are in a cell?
23 pairs (46)
What is cloning?
Generating an identical copy of a beeing
In which stage is the crossing over process?
Prophase 1
What holds the bases together?
hydrogen bonds
Name all the phases of the cell cycle
Interphase (G1, G0, S-phase, G2, metaphase), mitosis
What is the main term for sexchromosomes?
gonosome
What is the first cloned sheep called
Dolly
What kind of division is Meiosis?
reduction devision 200
Of what is the DNA made of?
It is made of nucleotids: sugar, phosphate and nitrogenouse bases.
What is the consequence of uncontrolled cell devision (disease)?
Cancer is a disease of uncontrolled cell devision.
How is the upper part of the chromatids called?
Telomere
What type of sheep was the surrogate mother of the cloned sheep?
It was a adult scottisch blackface ewes.
Why do siblings look different to eachother?
Process of crossing over, different parts of DNA from their parents,...
What is the long term for DNA?
Deoxyribonucleic Acid
Briefly describe the steps of mitosis and name them in the right order.
Prophase(the chromosomes are condesing and in the nucleus),
Metaphase (the chromosomes line up in the middle of the cell, nucleus dissasebles), Anaphase (lined up chromosomes are pullesd apart by spindles to other sides of the cell), telophase(chromosomes are at opposite sides ,forming two new nuclei, reproduction is being completed)
What is a pair of chromosomes called?
diploid
How are the three "mothers" of the cloning process called
egg cell donor, nucleus donor, surrogerated mother
What is the difference between Mitosis and Meiosis?
What are the correct nitrogenouse base pairs?
Adenine+Thymine; Guanine+Cytosine
Which cell is permanantly in the G0 phase?
adult neurons, which are nerve cells
How is the set of chromosomes called and how are they arranged ?
The Karyogram shows the chromosomes in homologous pairs of decreasing length.
Like which "mother" will the cloned beeing look?
the beeing looks like the nucleus donor
What happens in cytokinesis and in which phase does it occour?
cytokinesis takes place in the telophase and it is important for the seperation of the cytoplasm