Elastic fibers are a type of fiber within the connective tissue category. These types of fibers are made up of the protein elastin and they allow tissues and organs to recoil and oppose tearing forces. 

Reticular fibers are composed of collagen and form thin mesh networks that supports cells, tissues, and organs. The reticular meshwork also acts as a scaffold for other structures to anchor into.

In the human body, connective tissue has a variety of functions that allows proper function and survival. These functions include elasticity to resist tearing and stretching forces, loose tissue and ground substance that allow for the diffusion of nutrients and oxygen, and immune cells that can activate to protect the body.

In the human body, not all types of connective tissue contain fibers. Examples of non-fibrous connective tissues are blood, adipose tissue, and bone which are made of plasma and cells, fat, and mineralized extracellular matrix, respectively.

Connective tissue is a category of tissue in the human body that supports and connects different organs and tissues in the body. Other tissue categories in the human body include epithelial, which lines the cavities and surfaces of the organs in the body, muscle, which contracts to produce motion, and nervous tissue, which transmits information through electrical and chemical signals.

Cartilage also performs a structural function, but it is more flexible than bone. Furthermore, it doesn't have nerves or blood vessels. This explains why a broken bone heals quite well (sometimes the broken bone becomes stronger than it was before) while cartilage does not heal/regenerate nearly as fast. They both secrete matrices, and are made up of collagen and calcium salts. 

Silent mutations will change a DNA sequence without affecting the phenotype of the organism. This can occur either in an intron, which will not be translated, or by replacing a single nucleotide with another nucleotide without changing the amino acid recruited by the codon. Silent mutations often result from the degenercy of codons.

Frameshift, missense, and nonsense mutations, however, change both an organism's genotype and phenotype by altering its DNA. A frameshift mutation results from the insertion or deletion of a nucleotide, causing a shift in the codon reading frame for every codon read after the mutation. Missense mutations replace one amino acid with another, and nonsense mutations result in a premature stop codon, terminating translation and resulting in a shortened protein.

Proofreading is a function of DNA polymerase III that helps prevent errors during replication. An immediate consequence of a cell that cannot proofread would be a higher rate of mutations during replication. The other options could potentially happen later in the cell's life, but they would only occur as indirect results of the new mutations.

Histones are composed of several proteins, and are used to compact DNA within the nucleus. When DNA is wrapped around a group of eight histones, the resulting structure is a nucleosome.

The histone protein H1 is affixed on top of the nucleosome beaded structure, so as to keep the DNA that has wrapped around the nucleosome in place. It is not found in the core of the nucleosome.

H2A, H2B, H3, and H4 are very similar in structure and form the core of the histones.

For correct mismatch repair all three of the choices are essential. A nuclease is required to remove the damaged DNA. DNA polymerase is required to synthesize new DNA. DNA ligase is essential for synthesizing a phosphodiester bond between the newly synthesized DNA and the original DNA.