Genetics

¿When and what factors affect the correct functioning of control points in the cell cycle, and how mitosis and meiosis are affected when control points fail?

I've studied developmental biology, but I have not yet seen anything that explains how gametes actually "live". I think of DNA as the software of the cells. We know that gametes (sperm and unfertilized eggs) are alive and perform various functions; however, ... Has science uncovered how their DNA operates? Is their existence as gametes simply the "default" consequence of having only half of their DNA? Or (because gametes of diverse species behave very similarly) do gametes simply suppress their "organism" DNA/software (which runs after fertilization occurs)? So, do gametes (and, by extension, do all cells in our bodies) have two sets of software -- what might…

How does a person with a genetically-based degenerative disorder develop apparently normally from conception, through birth and often into advanced adulthood? (Muscular dystrophy often manifests in early childhood, arrhythmogenic right ventricular cardiomyopathy in the teens, and Parkinson's after 50.) One would think the genetic variation/mutation would not allow for normal development.

I am new to the world of genetics & DNA. Having no formal education or prior experience. Please pardon my ignorance in advance. The admixture analyses of my autosomal DNA test results, performed by GEDmatch, suggests the following: E_Eurasian: 2.83% Sub-Saharan African: 1.96% W_Eurasian: 95.21% My first question...would/could this 1.96% SSA be considered as “noise”? On my chromosome painting, there is a SIGNIFICANT showing of Sub-Saharan on Chr 8. My second question...would/could/does this indicate an African ancestor hiding somewhere in my family tree? With familial roots in the deep “South”, United States, for the last 200/3…

I was reading this Quanta article https://www.quantamagazine.org/how-nature-defies-math-in-keeping-ecosystems-stable-20180926/ And the following quote appears in it: “People have made a lot of progress in genetics by studying model organisms,” Can someone give me an example of progress being made in genetics by studying model organisms or explain in principle how progress is made by studying model organisms?

For the past few months, I've been thoroughly studying the Race-IQ debate; being black myself, I wanted to be armed and ready to confront any racialist I might happen to debate with, using cold, hard facts. But along the way, I found myself on a rather contradictory roller-coaster. At several points, I was forced to question the things I'd learned about race and equality for my entire life; of course this was uncomfortable, even devastating for me; psychology, a topic once so engaging and fascinating to me, became tinged with the darkness of what I'd read. The search for objective sources was endless, and mostly unsuccessful. At times, I believed the hereditarians; then i…

If so, where and how? I'd also like to know more about a new method that allows 50% of my DNA and 50% of my partner's DNA to be in the same child - if there's such a thing. Thanks! <3

Hello, I would have a few questions regarding mankind's current knowledge of Genetics, as of 2014. 1. It was my understanding that we humans were defined by up to 35,000 different genes. Correct ? 2. Among these 35,000 different genes, how many do we know well enough to tell what impact they have on the body and proteins? 3. I heard it was possible to copy any human's DNA, and as a result, any human's full genome. How do we do that? How long does it take? It was also my understanding that we needed a "living" cell of the subject to do that, so it is not possible with bones, hair and whatnot. Is this still correct nowadays ? 4. For any human, a few of t…

Hello everyone, I have Myopia or near-sightedness. My mother is far-sighted and cannot see stuff that's near her without glasses. Is it possible that I still got my Myopia through genetics?

I'm not sure about this, Can anyone help me answer this question? Thanks for any help! Also I have another question, what are difficulties in using population studies based on race?

hi all I need your help in this matter....I am stuck I guess!!!! I collected manure samples from the following animals:cow, deer, pig, chicken, chicken litter. Then I amplified the 16S rDNA from each animal DNA using universal primers 515F/1492R. I could amplify the 16S rDNA gene from all of the animal samples except the deer. The PCR protocol I am using is: 94C for 10min 35 cycles of the following 3 steps: 94C for 1min 50C for 1min 72C for 1.5min 72C for 10min 4C for hold the previous protocol worked for all animal samples except the deer sample!!! I used Fast Prep kit to extract the DNA. The melting temperature for 515F primer is 63.8 and fo…

What primers would we use to make cDNA of 16S rRNA?

Hi all In fact I need a help. I need a good method and speed one to extract 16S rRNA from bacteria. Thanks,:eek:

"GFAP is a type III IF protein that maps, in humans, to 17q21." -wiki Glial Fibrillary Acidic Protein What does the mapping designation 17q21 stand for? What 'keyes' would I input into a search on this specifically(map convention?)

Hello. If a DNA sequence is taken from some tissue of a creature -say liver- is compared to another tissue -say kidney- of the same; are they identical ? Should they be ?

I work with nematode (eukaryote) ribosomal DNA, In the literature I see that some times the 28S gene is refered to as the 26S gene or vice versa for different nematode species. Can anybody tell me whats the difference ?

In my life science class we got divided up into pairs, and are making different DNA models. How detailed they are is dependant on our skill level. Cody and I are making a really detailed one, and it is suposed to show the molecular structure of ech of the base pairs, and the deoxyribos and Phosphate group. We are going to start building it after we get back from Thanksgiving break, but how owuld you show each molecule 3 dementionally?

It's been reported that Dick Cheney and Barrack Obama are 8th cousins, having a common ancestor 8 generations ago. Other reports surfaced (most done by the New England Historic Genealogical Society, not sure how credible they are) that stated Obama being related to 8 U.S. presidents including both Bushs, Harry Truman, LBJ, through something ridiculous like "11th cousins 3 times removed" and the youtube community just about lost their minds. Anyways, what are the odds of random people.... well they aren't random people. What are the odds of people of the same race (Obama is biracial, but the rest are white) and similar social status being 6th, 7th, or even 11th cous…

I've been trying to find information on the education required to become a genetic therapist, but since genetics is somewhat of a new frontier in medicine (I think), it's very hard to find direction. Basically what I'm asking is, what education is required to become elegible for this field of work?

I often come across statements similar to the two below, which make sense in isolation but contradict each other when seen together: 1. We share 50% of our genes with a full sibling. 2. We share 90% of our genes with mice (or similar numbers for other species). There's obviously some distinction in definition not being revealed here - could someone explain it to me?

What if mitochondria begins to evolve and can't be used as a factory to produce ATP, if this mutation in the mitochondria spreads, will the human race die out?

Hello, I'm a student entering university soon and have a, frankly, rudimentary understanding of the intricacies genetic engineering of plants. Thus, I have a few questions regarding it. 1. This is probably the simplest of my questions; when injecting foreign DNA into plant cells, does it necessarily matter where you place the new gene into the plant's genome as long as the necessary "trigger" sequences are in the gene (that is, the sequences that tells the plant to produce the certain encoded enzyme)? 2. What generally dictates/limits how much of a certain compound is produced by an enzyme (other than availability of raw reactants) with regards to genetic sequ…

Hello, As we all know , AIDS is an dangerous disease. AIDS (HIV) virus attacks a CD4 cells and makes it's own copy by sending his RNA inside the cell. Using reverse transcriptase, viral DNA is formed and lytic cycle continues. Here is a thought, We know Genome of HIV virus, right ? What would happen if can encorporate a gene within CD4 cells growing on agar, which produces REN ( Restriction endonuclease) that cuts the Viral RNA into small pieces,thus making it ineffective? We can tranfuse the GM CD4 cells into an affected person. As there are no new infections possible, number of viruses will decrease gradualy. We might be able to cure AIDS ! I am …

Hi! My name is Emily, and I am a high school senior in my Aquatic Biology/Scientific Research Honors class. For our final project, we have to write a scientific paper on anything to do with aquatic habitats. (water, fish, streams, etc.) I am very interested in Genetics, so I was hoping to do my research on something to do with it. My teacher is allowing me access to her RNA Extraction equipment. However, she has never had a successful extraction. I would really like to maybe compare RNA of 2 different organisms from the same species. The Questions: 1. Is there a specific aquatic organism's RNA that would be the best/easiest to extract? 2. How should a high school…