By chance, some cells end up with an active X from their mother, and others the X chromosome they received from their father. As the embryo develops, the descendants of the early dividing cells will inherit the same paternal or maternal active X chromosomes and the specific gene forms on those chromosomes. On average, half of the cells express their maternal X and half express their paternal X.
Any change or mutation in the DNA sequence of a human gives rise to a genetic disorder. Classified into different types, the primary cause of a genetic disease is basically an abnormality that can range from minuscule to major.
Some disorder of this kind is derived from parents while others can be caused by mutations in pre-existing genes or congenital. Some diseases are so complex that no proper diagnosis Genetic disorders essay complete cure has been discovered yet. Mutations occur due to some error in DNA replication.
This can even be caused by environmental factors such as smoking or radiation exposure. The human genome is basically a set of nucleic acid sequences that are encoded as DNA in 23 chromosome pairs in cell nuclei and also, in mitochondria. Human genome is capable of undergoing changes in the bases or chromosomes.
In case of changes in DNA, the protein it codes for is also affected in some way and be incapable of carrying some function. Genetic disorders are of three types, single gene disorders, chromosomal abnormalities, and multifactorial disorders.
Essay on Importance of technology in health care -Tech impact on health care In case of a single gene disorder, there are mutations in DNA sequences of single genes, as a consequence of which the protein for gene code is either altered or missing.
These disorders are inherited in recognizable patterns such as autosomal dominant, autosomal recessive, and X-linked. Dominant disorder occurs when an individual has one altered copy of the relevant gene and one healthy copy. Recessive disorder only occurs when an individual has two altered versions of the relevant gene.
X-linked disorder reflect the presence of an altered gene on the X chromosome.
Essay on animal testing: Chromosomes are carriers of genetic materials. The diseases may also occur due to chromosomal translocation in which portions of two chromosomes are exchanged. Multifactorial disorders involve variations in multiple genes, often coupled with environmental causes.
Another form of genetic disorder is mitochondrial inheritance which is caused by mutations in the non-nuclear DNA of mitochondria. Each mitochondrion may contain 5 to 10 circular pieces of DNA.
The process of diagnosis of genetic disorders in extremely complicated. Scientific discoveries in the field of medical science are witnessing growth at a lightning pace. The Human Genome Project is an international, collaborative research program whose goal was the complete mapping and understanding of all the genes of human beings.Apply Join the Concordia Family When you attend Concordia University, you’re more than just a student.
You’re part of the Concordia family. Apply. A cause and Effect essay is where a writer analyses the consequences or reasons for a subject,action or event. There are different types of cause and effect that one may take into consideration.
Civil Rights Argumentative Essay About Same Sex Marriage. This Argumentative essay will discuss the argument of same sex marriage. The contents are: meaning, brief background and thesis statement for the Introduction; for the Body of the discussion is the counter argument; and for the conclusion part: the summary and the restatement of the thesis statement.
Genetic disorders have been around for a very long time. They are usually caused by recessive genes and can range from minor traits to death.. Achondroplasia is a type of dwarfism characterized by abnormal proportions of the arms, legs and body, results from impaired cartilage growth.
It is a 3/5(3). All animals have biological dysfunctions, genetic junk, signs of evolutionary dead-ends and obscure morphologies (birds that can't fly, male nipples, etc) and countless other little imperfections that belie the any idea that evolution 'knows' what it is doing.
Cousin marriage is marriage between cousins (i.e. people with common grandparents or people who share other fairly recent ancestors). Opinions and practice vary widely across the world.
In some cultures and communities, cousin marriage is considered ideal and actively encouraged; in others, it is subject to social timberdesignmag.com some countries, this practice is common; in others it is uncommon but.