X chromosome

as TedEd. It is time for those who live with this syndrome to get the recognition and attention that they so rightfully deserve. Klinefelter’s belong to a class of diseases known as genetic diseases. Some more well known ones include Down Syndrome, X-linked…

The sex chromosome determines whether a zygote will be male or female. Females have XX sex chromosomes and males have XY chromosomes. One chromosome comes each comes from the gametes of the parents. Each egg has an X chromosome and “if the sperm contains a Y chromosome, the match with the female chromosome will be XY, and the child will be genetically male,” (Ginsberg, Nackerud & Larrison, 2004, p. 198). On the other hand if the chromosomes from each parent is XX the child…

For instance, there are two types of chromosomes: autosomal and sex chromosomes. Sex-linkage behaves differently from autosomal chromosomes since males tend to have more impacts. In addition, crossing over can also happens between homologous chromosome; however, the frequency of having recombinant of two genes varies depending the gene loci. Crossing over can happens to any chromosome except for the male fruit fly sex chromosome due to unknown reason. Recombinant frequency uses to…

that are received through an individual having an abnormality in DNA”(Genetic Science Learning Center, 2014). These irregularities range from single-base mutations on just one chromosome all the way up to receiving or removing an entire chromosome. In the case of neurofibromatosis, it is caused by an anomaly in a single chromosome. Neurofibromatosis, also known as NF, has two distinct types called NF1 and NF2. “NF1 occurs in approximately 1 in 4,000 births, whereas NF2 occurs about 1 in 40,000…

and an amazing team of geneticists discovered it in 1958. Down syndrome’s most common form is Trisomy 21 which is caused by a chromosomal abnormality called nondisjunction. More than 90% of the time Down syndrome is caused by an extra copy of chromosome 21…

cases and then there is X-linked Ichthyosis, which is the least common type of Ichthyosis with there being only one in every 6,000 births in males (Panthagani). X-linked Ichthyosis was chosen as the area of interest, it is a recessive disease in which only males get the disease and females are carriers for the disease. The gene that causes Ichthyosis is X-linked, which means it is a disease passed down from a mother to her child. The gene we are concerned about with X-linked Ichthyosis is…

Triple X Syndrome (Trisomy X) What is a genetic disorder? A Genetic disorder is inherited conditions caused by a DNA abnormality. Genetic disorders are caused by problems by one or more abnormalities in genomes. Usually apparent at birth. Genetic disorders are usually rare and impact one in several thousands, if not millions each day. For example Triple X syndrome affects 1 of 1,000 of females. Triple X Syndrome also known as (trisomy x) is a genetic disorder that deals with females…

Trisomy 13 is a disorder that is created by translocation. An extra 13th chromosome somehow attached to one of the gametes. Infants die quickly with little chance at life. Genetic researchers don’t know why. Trisomy 13 is a genetic mutation linked to the 13th chromosome. Instead of a pair of the 13th chromosome, you somehow would have extra. The cause of having this third 13th chromosome was that the extra chromosome was attached to one of the gametes. This is called Translocation. The side…

Adrenoleukodystrophy (ALD) is a condition which affects the ability of adrenal glands to produce adrenaline and myelin, which insulates the nerves in the brain and spinal cord. This diminishes the ability of the brain to communicate effectively with the rest of the nerves. This condition was initially identified in the early 1900s and was originally called Schilder-Addison disease (2). The cause of this condition originates in the peroxisomes, which are tiny structures in the cell which assist…

Barbra McClintock was born June 16, 1902, in Hartford, Connecticut (Editors). The third of four children born to physician Thomas McClintock and wife Sarah, McClintock was christened Eleanor, though her parents soon began to call her Barbra believing the nickname better suited her pragmatic demeanor (“Barbra McClintock”). Barbra demonstrated an interest in science from a young age, perhaps influenced by her father’s profession (Editors). At the age of seventeen, she graduated from high school…