Genetic Mutations - Hidden Secret (Nat Geo)

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.

Mutations result from errors during DNA replication or other types of damage to DNA which then may undergo error-prone repair (especially microhomology-mediated end joining) or cause an error during other forms of repair or else may cause an error during replication (translesion synthesis). Mutations may also result from insertion or deletion of segments of DNA due to mobile genetic elements.Mutations may or may not produce discernible changes in the observable characteristics (phenotype) of an organism. Mutations play a part in both normal and abnormal biological processes including: evolution cancer and the development of the immune system including junctional diversity.

The genomes of RNA viruses are based on RNA rather than DNA. The RNA viral genome can be double stranded (as in DNA) or single stranded. In some of these viruses (such as the single stranded human immunodeficiency virus) replication occurs quickly and there are no mechanisms to check the genome for accuracy. This error-prone process often results in mutations.

Mutation can result in many different types of change in sequences. Mutations in genes can either have no effect alter the product of a gene or prevent the gene from functioning properly or completely. Mutations can also occur in nongenic regions. One study on genetic variations between different species of Drosophila suggests that if a mutation changes a protein produced by a gene the result is likely to be harmful with an estimated 70 percent of amino acid polymorphisms that have damaging effects and the remainder being either neutral or marginally beneficial.Due to the damaging effects that mutations can have on genes organisms have mechanisms such as DNA repair to prevent or correct mutations by reverting the mutated sequence back to its original state.

[alexstuber]

Answers for the National Geographic: Genetic Mutations - Hidden Secret Video Questions

(1:00)- Strange, weird things/mutations or anything people would pay 10 cents to see.
(3:40)- Mutant Animals.
(4:30)- Snake with two heads.
(7:00)- Siamese/conjoined twins
(10:00)- Albino Squirrels
(14:50)- Plague
(17:02) HIV
(18:00)- Milk
(20:00)- Natural Selection
(23:00)- Islands
(24:00)- Finches
(27:00)- Chicken
(29:00)- Dog
(33:00)- {Premolar Teeth)
(34:50)- Sunlight, PAH
(41:00)- Mice
(48:00)- Mutation

[bmant]

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3:40
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14:50
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[SchriyJ]

This was made in the 90's so it's over 20 years old!

[kroki]

So we're all here for goddamn school?

[c.h.]

20:00
23:00
24:00
27:00
29:00
33:00
34:50
41:00
48:00

[darrenpai]

8th grade pandemic squad where you at?

[ivyviolet]

Can someone tell me what happens I don’t want to watch almost an hour of this

[wesleybantugan]

you better get them to help prevent the COVID-19 pandemic

[willmills]

While watching this with my middle school science class, I was elated when the CCR 5 Delta 32 red blood cell mutation came up. I have/carry that in my family tree as well as my long deceased great grandfather having a 12 finger mutation and being B- blood type. I had my blood screened long ago when I was a firefighter and the results were forwarded to our county health district who ran my blood sample further and called me in to give me the news. Unlike in the movies, I feel no different and have no powers 😂

[trgqnqs]

yo to everyone who is in Cynthia Bonilla class!!!

[emiliagolden]

I got albino Squirrels in my backyard. Its a male and has passed his albino genes on. 😂 i got white Squirrels with red eyes, and white ones with black eyes.

[Mercurzzzz]

This video makes me want milk, even though I'm a little intolerant haha

[mattieconstance]

Where I live we have two albino dolphins

[madi]

if ur from southern middle school 8th grade reply to this lolz