Metamorphism from its prefix "meta" means the structural change of rocks by natural agents such as pressure, heat or introduction of chemical substances. For this event to occur, temperatures and pressures must be higher than 200-degrees C and 300 MPa (megapascals). Temperature is the key variable for metamorphism to occur because heat is required for chemical reactions to take place, thus, as temperature increases, the rate to which the ions diffuse between minerals also increases, albeit it should be noted that it is a slow process since the ions have to permeate through a solid rock. The process is hastened through water, which allows a faster diffusion of ions.
Answer: The question is incorrect, below is the correct question
Which DNA FINGERPRINTING technique examines the length variation of DNA repeat sequences in human DNA?
The correct answer to the question is option D
mtDNA (mitochondrial DNA) analysis
Explanation: DNA fingerprinting technique is a laboratory technique used by geneticists.it entails placing of DNA samples into wells,these wells are then placed in a slab of gels and thereafter passing a current through the gel.This is done to ascertain the uniqueness of a DNA pattern and thus be able to differentiate people of same species.
There are several methods of DNA fingerprinting as outlined in the options given with the question.
In mtDNA (mitochondrial DNA) analysis,The Genetic samples are extracted from the biological materials, these samples extracted are total genomic DNA like hair,tooth or samples of blood, Several copies of these genomic DNA are then produced using a polymerase chain reaction and flanking primers inorder to examines the length variation of DNA repeat sequences in human DNA.
The nucleus because it is the brain of the cell, it's what controls it.
Steroid hormones affects cells by binding to intracellular receptor
complex that composed of a single polypeptide chains, which promote or inhibit
transcription of specific genes. The receptors for steroid hormones are located
inside the target cells specifically in the nucleus or cytoplasm, which bind to
regions of receptive genes.
<span>Therefore, the function of steroid hormones is to control gene
expression in target cells by selectively affecting the transcription of a set
of genes. The proteins concentration of the target cells are altered, which
could result to the modification of the phenotype of cell. </span>
It’s spread by direct contact