what are the three different types of point mutations?
317264
['Substitution. A substitution mutation occurs when one base pair is substituted for another. ... ', 'Insertion and Deletion. An insertion mutation occurs when an extra base pair is added to a sequence of bases. ... ', 'Cystic Fibrosis. ... ', 'Sickle-Cell Anemia. ... ', 'Tay-Sachs.']
1366631
['Molecular genetics.', 'Developmental genetics.', 'Population genetics.', 'Quantitative genetics.', 'Phylogenetics.']
1377765
['Attachment – the phage attaches itself to the surface of the host cell in order to inject its DNA into the cell.', 'Penetration – the phage injects its DNA into the host cell by penetrating through the cell membrane.']
849306
A point mutation or substitution is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome.
638629
Point mutation brings changes in the structure of a gene because of the substitutions with another base pair, on the contrary, frameshift mutations change the number of nucleotides due to either insertions or deletions of the nucleotides.
1106558
There are three sources of genetic variation: mutation, gene flow, and sexual reproduction. A mutation is simply a change in the DNA. Mutations themselves are not very common and are usually harmful to a population.
1054607
['a central carbon atom.', 'a hydrogen atom.', 'an amino group - consisting of a nitrogen atom and two hydrogen atoms.', 'a carboxyl group - consisting of a carbon atom, two oxygen atoms, and one hydrogen atom.', 'an R-group or side chain - consisting of varying atoms.']
1123177
['A (Adenine): One of the four DNA bases. ... ', 'Amino Acid: The basic unit of a protein, and sometimes called the “building blocks of life”. ... ', "Ancestry: An individual's family or ethnic descent. ... ", 'Base: The most basic unit of DNA. ... ', "Base Pair: Also sometimes called the 'rungs' of the DNA ladder."]
791326
['Initiation. ... ', 'Elongation. ... ', 'Termination. ... ', 'Post-translation processing of the protein.']
854400
['Phototrophs:', 'Chemotrophs:', 'Lithotrophs:', 'Organotrophs:', '(i) Photoautotrophs.', 'Purple Sulphur Bacteria:', 'Green Sulphur Bacteria:', '(ii) Chemoautotrophs.']
341183
The four major types of biomolecules are carbohydrates, lipids, nucleic acids, and proteins.
562621
['single nucleotide polymorphisms (SNPs)', 'small-scale insertions/deletions.', 'polymorphic repetitive elements.', 'microsatellite variation.']
277736
['Combination.', 'Decomposition.', 'Single displacement.', 'Double displacement.', 'Combustion.', 'Redox.']
907753
For a given population, there are three sources of variation: mutation, recombination, and immigration of genes.
612209
Frameshift mutations are insertions or deletions in the genome that are not in multiples of three nucleotides. ... Frameshift mutations do not include substitutions where a nucleotide replaces another. In substitution mutations, the polypeptide only changes by a single amino acid.
928962
['Protein production mutations (Class 1)', 'Protein processing mutations (Class 2)', 'Gating mutations (Class 3)', 'Conduction mutations (Class 4)', 'Insufficient protein mutations (Class 5)']
1045798
There are three types of genetic disorders: Single-gene disorders, where a mutation affects one gene. Sickle cell anemia is an example. Chromosomal disorders, where chromosomes (or parts of chromosomes) are missing or changed.