https://www.facebook.com/profile.php?id=100008418274887 Through the years of searching for fossils of the ever-popular Tyrannosaurus rex, locating a pregnant one has been understandably difficult.
But scientists now believe they’ve located one, determining this particular T. rex that roamed Montana was female.
Traditionally, it’s been extraordinarily difficult to figure out a dinosaur fossil’s gender.
Specifically, the researchers from North Carolina State University and the North Carolina Museum of Natural Sciences found a medullary bone in a T. rex femur.
These bones are found only in female birds in the period before or during egg-laying.
Now, the scientists believe they will be able to find differences between male and female dinosaurs of this kind (theropod dinosaurs), and learn more about the evolution of egg-laying in birds.
“It’s a dirty secret, but we know next to nothing about sex-linked traits in extinct dinosaurs. Dinosaurs weren’t shy about sexual signaling, all those bells and whistles, horns, crests, and frills, and yet we just haven’t had a reliable way to tell males from females,” said Lindsay Zanno, a Museum of Natural Sciences paleontologist, in a press release.
“Just being able to identify a dinosaur definitively as a female opens up a whole new world of possibilities. Now that we can show pregnant dinosaurs have a chemical fingerprint, we need a concerted effort to find more.” Video Rating: / 5
For more information about genetic testing, visit https://www.ambrygen.com/
Approximately 14.51 million Americans are currently diagnosed with cancer; and about 10% of the time, the disease is caused by a hereditary cancer mutation.
What is a hereditary cancer mutation? To answer this common question, Ambry Genetics has created a short video which outlines the vital basics of hereditary cancer by explaining the causes, risks and family implications associated with the diseases. Video Rating: / 5
This girl has six fingers on her left hand. She has a condition called polydactyly, which causes extra fingers or toes. Her father and grandmother as well as some of her cousins also have the condition. This should give you a clue about how she came to have it… any ideas? Well, polydactyly is an example of a genetic disorder – it is inherited. You inherit genes from your parents, and you have two copies of each gene – one from your mother and one from your father. Genes come in different forms, called alleles. Alleles may be recessive or dominant.
So going back to Polydactyly… Polydactyly is caused by a dominant allele, shown as a capital P. You only have to have one copy of this allele to have the condition. So in an example the father has a copy of this allele, but the mother does not… Offspring with one dominant allele big P, and one recessive allele little p will also have the condition. Whereas these offspring won’t have the condition. Can you see what their genotype must be…? Little p, little p – so two copies of the recessive allele.
Another example of an inherited disorder is cystic fibrosis. If you want to discover more about cystic fibrosis, and how it affects the body then watch this video [insert link to ‘cystic fibrosis’ video].
Cystic fibrosis is inherited in a different way to polydactyly. Take a look at this genetic diagram and see if you can figure out how it is different.
To have cystic fibrosis, you have to inherit two recessive alleles. The parents in the diagram are both carriers of the recessive allele, little f. They do not have the disorder themselves but they could both pass the recessive allele to their children.
Quite often, people do not know they are carriers of cystic fibrosis until they have a child with the disorder. This can be very upsetting, as it is a serious condition.
Parents are able to make sure they do not have another child with the disorder using embryo screening.
Let’s finish off with a little discussion about what embryo screening is.
Embryo screening can be used to ensure embryo’s do not suffer from inherited genetic disorders.
To do this, the parents would use in-vitro fertilisation, which is also known as IVF.
IVF is where eggs and sperm are mixed in a dish in a lab outside of the body. Each fertilised egg would be left to grow until it reached a few cells big, and then one cell from each embryo is removed and its genes tested to see if it has the genetic disorder. Only unaffected embryos – a maximum of two – would be placed back into the mother’s uterus to grow and hopefully develop into a healthy baby.
There are many issues surrounding embryo screening. One ethical issue is that the unused embryos, potential lives, are destroyed. Also, there are social concerns – IVF is not always successful and this can be upsetting for the parents and their family. Finally there are also economic issues because IVF is an expensive process.
So there we have a few examples of inherited genetic disorders. These are inherited from your parents, resulting from certain alleles your parents have been carriers of.
Sometimes genetic disorders are caused by dominant alleles – like polydactyly so it can be inherited from one parent – and others are caused by recessive alleles – like cystic fibrosis – so both parents need to carry the allele.
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This video “Genetic Diseases: Categories” is part of the Lecturio course “Genetics” ► WATCH the complete course on http://lectur.io/geneticdiseasescategories
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Dr. Georgina Cornwall has taught a broad array of Biology courses at different U.S. universities, currently at the Colorado Mountain College in Aspen. Dr. Cornwall is an active promoter of hybrid teaching formats like online and interactive courses. Thus, she uses modern technology to engage her students in the diverse disciplines of biology – from Microbiology to Genetics.
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Stephen digs into the modern-day genetic testing because curiosity is in his genes.
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This video contains a detailed and simplified explanation about diabetes insipidus. We discuss the differences between cranial and nephrogenic diabetes insipidus, the signs and symptoms, testing for diabetes insipidus including an explanation of urine and blood osmolality and the water deprivation test (also known as the desmopressin stimulation test) and how we manage diabetes insipidus.
More written notes and diagrams about diabetes insipidus are available on the website at www.zerotofinals.com/diabetesinsipidus
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DISCLAIMER: This video is for education and entertainment only, and is not medical advice. This video should NOT be used for medical advice or to guide clinical practice. The Zero to Finals content should not be used in any way to guide medical decision making. Zero to Finals takes no responsibility for any actions taken or not taken based on the information provided. Local and national guidelines and senior clinicians are there to help you make decisions, not YouTube videos. If you need medical advice or information, seek it from an appropriately trained and licenced doctor or healthcare provider that can address your individual needs. Zero to Finals cannot guarantee the accuracy of information in this video. Please highlight any errors you notice in the comments below – thank you. Video Rating: / 5
Diabetes Insipidus is a condition in which there is absolute or relative deficiency of ADH. Clinical manifestations include polyuria ( increased urine output of more than 3L/day in adults ) and signs of dehydration if severe. These symptoms can overlap with numerous other conditions as well so clinical judgement as well as other lab tests can be used to confirm the diagnosis.
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Biology tutoring on Chegg Tutors
Learn about Biology terms like Diabetes Insipidus: Signs and Symptoms on Chegg Tutors. Work with live, online Biology tutors like Niyati B. who can help you at any moment, whether at 2pm or 2am.
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Kasturba Medical College, Manipal, India, Class of 2013
Medicine major
Subjects tutored: SAT (reading), English as a Second Language, Basic Math, PSAT (reading), PSAT (math), Marathi, Medicine, SAT (math), Biology, Health and Medicine, Hindi, Medical Assistant, and TOEFL
TEACHING EXPERIENCE
I have taught concepts of basic math like solving linear equations to my young cousins in California ( grade 6 ) as well as basic human biology like circulatory system. I used to teach English to the children of the house hold helpers back in India and i find that this is what has helped me develop patience and not just that but also helped me brush up on my own knowledge of some things that I never thought I’d use after middle school. Einstein said if you can’t explain it simply then you haven’t understood it well enough and I completely agree. My goal: explain it simply, but also in a way that is hard to forget.
EXTRACURRICULAR INTERESTS
Well in a nutshell I’m a knowledge hungry newbie doctor ( graduated from a medical school in India ) , an avid reader , and I’m also a huge trivia nerd. I have a flair for all things literary ( debate , crosswords , word play you name it ) I absolutely love to read ( mostly fiction , some of my favorite authors like Khaled Hosseini are doctors by profession ) and I have written about 30 poems over the past 10 years. I enjoy listening to podcasts, my favorite one is called Good Job Brain which is a quiz and trivia podcast and I also have a particular fondness for learning about Greek and Roman mythology, and love spoken word poetry. I love to listen to music and sing ( albeit not too well ) and I collect fridge magnets from the places I’ve been. I have spent part of my childhood in the US, and then the rest in India and my life has been transcontinental for the most part which has given me the benefit of some amazing experiences. I also have an artsy side – sketching and painting are some ways I like to unwind, and listening to TED talks is always an option.
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Hepatitis C is a viral infection causing liver disease. Over 3 million people in the US are infected with hepatitis C and over half remain undiagnosed. The vast majority of individuals living with hepatitis C do not have symptoms. Hepatitis C is transmitted through contact with infected blood and many are unaware of their infection. If left untreated, hepatitis C can damage the liver to the point of cirrhosis, liver cancer and liver failure. The good news is that there are short-duration treatments that can lead to cure. The Johns Hopkins Viral Hepatitis Center is here to help more people get tested, treated and cured of this life-threatening disease. Learn more at: https://www.hopkinsmedicine.org/infectious-diseases/Patient_Care/outpatient/ViralHepatitis.html Video Rating: / 5
Hepatitis C is Curable and the Johns Hopkins Viral Hepatitis Center is here to help. Hepatitis C is a viral infection causing liver disease. Hepatitis C is transmitted through contact with infected blood and many are unaware of their infection. The vast majority of individuals living with hepatitis C do not have symptoms until the liver disease progresses to cirrhosis, liver failure or liver cancer. Treatments for hepatitis C have evolved from injections combined with pills causing severe side effects to a simple, well-tolerated, once-a-day oral medication for a short duration. Learn more at: https://www.hopkinsmedicine.org/infectious-diseases/Patient_Care/outpatient/ViralHepatitis.html Video Rating: / 5
In this video, Dr. Lawrence I. Golbe, Professor of Neurology, Robert Wood Johnson Medical School at Rutgers University, explains that multiple system atrophy (MSA) is not a hereditary disease.
Many people affected by multiple system atrophy (MSA) wonder if it is hereditary. An expert panel of top MSA physicians and researchers answer this important question at the 2017 MSA Coalition Patient and Family Conference. Video Rating: / 5
Topic: Pregnancy tips for first trimester – Tips for healthy pregnancy in first trimester – Pregnancy
Soeaker: Dr. Naima Sharmin Hoque, Assistant Professor, Dept. of Gynae & Obs, Zainul Haque Sikder Womens’ Medical College। তাঁর প্রোফাইলঃ https://goo.gl/j7dNdK।
Here are the warning signs of vitamin D deficiency most people ignore! Over 40% of American adults, and approximately 1 billion people worldwide are deficient in vitamin D. That’s a lot of people walking around lacking in this vital nutrient. As you may already know, lack of vitamins or a vitamin deficiency can cause serious health consequences if not addressed.
Because low vitamin D levels are affecting so many people across the globe, it’s important to learn the signs and symptoms of vitamin D deficiency. Since vitamin D has receptors throughout the body, it’s imperative that you get adequate amounts in order to stay healthy.
If you suspect that you may need more vitamin D based on this list, it’s best to talk to your doctor and get your blood levels checked. The good news is that a deficiency of vitamin D is easy to fix if your levels are lower than adequate. You can either you get more sunlight, consume more foods high in Vitamin D, or take a supplement.
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Can Diabetes cause Joint Problems from Hi9 by Dr K.J.Reddy | Sr Orthopedic Surgeon,Apollo hospitals
Diabetes and joint pain are not directly related to arthritis but in the feet of diabetic patients it causes neuropatheic joints where it looses sensations ,it is very important to control diabetes ,Diabetes and joint pain are considered to be independent conditions. Joint pain may be a response to an illness, injury, or arthritis. … Diabetes is caused by the body not using the hormone insulin correctly, or insufficient production of it, which affects blood sugar levels..
Part 1 of two animations about type 2 diabetes. Please note: this video has been updated to improve images and sound. Original video views: 7,968
This animation describes the process of inflammation in type 2 diabetes via a unique structure called the inflammasome. Over time, this process damages the pancreas, eventually leading to decreased insulin secretion and inability to control blood glucose levels. Chronic inflammatory ‘lifestyle diseases’ such as T2D are rapidly increasing in the western world and will pose a huge health burden in future.
