Nondisjunction is defined as the failure of the chromosomes to seperate during cell division. An animal with a haploid number of 6 (diploid number of 12) undergoes meiosis, and at the meiosis II (cells are already haploid from the meiosis I), nondisjunction occurs. The mature ovum will contain 6+1 chromosomes (n+1) because there is an extra chromosome from the nondisjunction. The second polar body will contain 5 chromosomes (normal would be 6) because the second polar body did not receive that extra chromosome due to nondisjunction. In the event of fertilization of the abnormal ovum with a normal sperm, the zygote will be a diploid (12 chromosomes) normally but since the ovum as an extra chromosome from the nondisjunction then the zygote will have an extra chromosome (13 chromosomes). One pair of chromosomes has an extra single chromosome and this is called a trisomy.
What? message me the full question lol
I don’t get what your saying but here’s my answer When a teen takes drugs in order to feel good, it interferes with the body's natural ability to do so. Here's how drugs affect the brain: The brain is made up of billions of nerve cells. ... Drugs overload the body with dopamine — in other words, they cause the reward system to send too many “feel-good” signals. I hope it helps you
First aid is care given to someone before a paramedic arrives so for example.. If you and your friend are out on the trails on atvs and your friend wrecks his/her dirt bike and you are miles from the nearest help what would you do? without first aid your friend could die he/ she has a large deep gash in their thigh. It is bleeding bad and applying pressure isn't helping stop it. You remember something from first aid class that may help but your friend could lose their leg and is very scared. so you would try to calm him/her down reassure them and,then you apply a tourniquet to stop the bleeding. now you take your friend to the nearest help. You just saved your friends life but, if you didn't know first aid he/she could've died by the time a paramedic made it to where you were. That is why is important to know. that is what we were taught in my class it worked we all passed and knew how to apply first aid. hope this helped. :)
From my understanding true because they are the fats and carbs carbs our calories calories are energy
TRUE
