Mitochondrial DNA (mtDNA) typing is used in forensic science for it serves as an important tool in determining the recovered damaged, degraded or small sample source of the DNA. Mitochondrial DNA is a small genome that is found in the mitochondria, just outside of the nucleus of the cell.
Answer:
B. an allele is a length of DNA with a specific sequence of nitrogen bases that make a protein that results in Hair or No Hair on the guinea pig
Explanation:
An organism that has two different alleles of the gene is called heterozygous. Phenotypes (the expressed characteristics) associated with a certain allele can sometimes be dominant or recessive, but often they are neither.
When Sarah thought that she heard a strange noise, the sympathetic nervous system of her triggered the 'fight-or-flight' response. This response is triggered in stressful situations. However, when the perceived threat was proved to be false, the parasympathetic nervous system starting slowing down her bodily functions to a normal condition. The parasympathetic nervous system triggers the 'relax-and-digest' response.
Hence, the answer is parasympathetic nervous system'.
