Mutations biology

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In General Biology, we've been learning genetics! We've studied both gene and chromosomal mutations. In this project, students could create their own mutations following a specific set of criteria. Level 2 student, Daphne, created such a colorful and easy to follow chart for her substitution, insertion, and deletion mutations! I love watching students not only grasp difficult concepts, but truly understand them and be able to manipulate those concepts on their own!

In the nucleus of each cell, DNA is packaged into thread-like structures called chromosomes. Each chromosome consists of DNA tightly coiled around proteins called histones that support its structure. Chromosomes play a vital role in heredity, mutation, variation, and evolutionary development of species.

In the future, we may be able to turn CRISPR off whenever we wanted.

What is DNA mutation? - In biology, a mutation is the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.

A mutation is an unpredictable change in the genetic material of an organism. Gene mutation: change in the structure of a DNA molecule, producing a different allele of a gene. Chromosome mutation: changes in the structure or number of whole chromosomes in a cell. Sources/ mutagens : increase chances of a mutation occuring - random - environmental factors (ionising radiations alpha, beta, gamma; UV radiation; chemicals) Gene mutations Types: base substitution base addition base deletion…

Microevolution is simply a change in gene frequency within a population. Evolution at this scale can be observed over short periods of time — for example, between one generation and the next, the frequency of a gene for brown coloration in a population of beetles increases. Such a change might come about because natural selection

Mutation: A change in a cell’s DNA.

Chromosomes , Biology, Biology student

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