One ma be born with physical, and or mental illness. Such as fragile X syndrome.
Mutation occurs, if a mutation is recessive it is not expressed in the phenotype, if however it is dominant when passed on in the offspring it is expressed in the phenotype.
Mutation
dna replication. can be summarised as the two helical strands of dna unravelling through the action of enzymes and the corresponding nitrogenous bases of each being matched up (A-T, C-G) to form two identical strands
If you are referring to the fragmented lagging strand for DNA replication, the fragments are called Okazaki fragments.
DNA itself is made up of nucleotides. Nucleotides links with each other to form a DNA chain. In the process of DNA replication, parent DNA strand needs to be duplicated. Hence, to make a new strand of DNA it requires nucleotides.
It's impossible to perform exact DNA replication, as everyone is different and unique. If you took some DNA from one species, and implanted it in another, they may look similar, but the DNA Structure would be different.
DNA replication occurs during mitosis and meiosis. During this process, the DNA is lined up before being duplicated so that each cell that's created from the process has the DNA needed.
dna replication. can be summarised as the two helical strands of dna unravelling through the action of enzymes and the corresponding nitrogenous bases of each being matched up (A-T, C-G) to form two identical strands
DNA makes up with chromosomes. The DNA is copied during DNA replication.
If you are referring to the fragmented lagging strand for DNA replication, the fragments are called Okazaki fragments.
DNA Helicase
DNA itself is made up of nucleotides. Nucleotides links with each other to form a DNA chain. In the process of DNA replication, parent DNA strand needs to be duplicated. Hence, to make a new strand of DNA it requires nucleotides.
The basic Answer is: " to speed up the process ".
It's impossible to perform exact DNA replication, as everyone is different and unique. If you took some DNA from one species, and implanted it in another, they may look similar, but the DNA Structure would be different.
DNA replication requires the opening of the 'zipped up' DNA strand. This is so a 'new' strand of DNA can be inserted and have a template strand to 'read' off. DNA polymerase analyses the bases on the template strand and adds each complementary base to synthesise the 'new' strand. In order for DNA polymerase to be able to do this the DNA has to be opened up by helicase to reveal the bases of the template strand. The unzipping of the DNA by helicase forms the replication fork. Thus the function of the replication fork is to reveal template strands for DNA replication to actually occur.
DNA replication occurs during mitosis and meiosis. During this process, the DNA is lined up before being duplicated so that each cell that's created from the process has the DNA needed.
DNA replication takes place when preceding interphase.
to speed up the process
DNA opens up and each strand is used as a template for a new strand.