Reciprocal translocation explained Reciprocal translocation is a chromosome abnormality caused by exchange of parts between non-homologous chromosomes. Two detached fragments of two different chromosomes are switched. In genetics, chromosome translocation is a phenomenon that results in unusual rearrangement of chromosomes. This includes balanced and unbalanced translocation, with two main types: reciprocal-, and Robertsonian translocation. Reciprocal translocation is a chromosome abnormality caused by exchange of parts between non-homologous chromosomes. Two detached fragments of two different chromosomes are switched. Robertsonian translocation occurs when two non-homologous chromosomes get attached, meaning that given two healthy pairs of chromosomes, one of each pair "sticks" together. A gene fusion may be created when the translocation joins two otherwise-separated genes. It is detected on cytogenetics or a karyotype of affected cells. Translocations can be balanced \(in an even exchange of material with no genetic information extra or missing, and ideally full functionality\) or unbalanced \(where the exchange of chromosome material is unequal resulting in extra or missing genes\). Reciprocal translocations are usually an exchange of material between non-homologous chromosomes. Estimates of incidence range from about 1 in 500 to 1 in 625 human newborns. Such translocations are usually harmless and may be found through prenatal diagnosis. However, carriers of balanced reciprocal translocations have increased risks of creating gametes with unbalanced chromosome translocations, leading to Infertility, miscarriages or children with abnormalities. Genetic counseling and genetic testing are often offered to families that may carry a translocation. Most balanced translocation carriers are healthy and do not have any symptoms. It is important to distinguish between chromosomal translocations occurring in gametogenesis, due to errors in meiosis, and translocations that occur in cellular division of somatic cells, due to errors in mitosis. The former results in a chromosomal abnormality featured in all cells of the offspring, as in translocation carriers. Somatic translocations, on the other hand, result in abnormalities featured only in the affected cell line, as in chronic myelogenous leukemia with the Philadelphia chromosome translocation. Youtube video: https://lnkd.in/d9EQNr7z \#nikolays_genetics_lessons
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This study highlights the long-term neurological effects of COVID-19, particularly in post-hospitalized survivors. These researchers observed brainstem changes linked to inflammatory processes. This research contributes to the growing understanding of COVID-19's lasting impact on brain health. In the next few weeks, we plan to announce our Research-Use-Only blood test, which could detect neurological damage before brain imaging and significantly enhance early diagnosis and intervention strategies. #dementia #alzheimers #venturecapital #angelinvestor #cancer #hivaids #bioOS #biotechnology #diagnostics #innovation #technology #management #startups #liquidbiopsy #neurodegenerativediseases #multiplesclerosis #parkinsonsdisease #alzheimersdisease #longhaulers #longcovid #humangenome #onetestonelife #longevity #artificialintelligence #rna #rnaseq #personalizedprevention #PersonalizedMedicine #ClinicalResearch #COVID19 #Parkinsons https://lnkd.in/eYauKhxm
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Rh factor: how to find allele frequency Blood typing is determined by the molecules on the surface of the red blood cells \(RBCs\). In general, we can classify someone s blood type by the absence or presence of A or B antigens and Rh factor on the surface of blood cells. The most commonly recognized blood groups are A positive, A negative, B positive, B negative, AB positive, AB negative, O positive, and O negative. The positive or negative sign next to the blood groups is known as the Rhesus \(Rh\) factor. The Rh factor is an inherited protein that can be found on the surface of the red blood cell. If your blood type is positive, then your blood cells have the Rh protein. If your blood type is negative, then your blood cells lack the Rh protein. Although Rh positive is the most common blood type, having a Rh-negative typing does not indicate illness and usually doesn t affect your health. Why Is Rh Factor Important? The Rh factor is one of the proteins on RBCs used to indicate whether the blood of two different people is compatible when mixed \_ such as blood of a mother and her baby at birth. It is routine and important that the Rh factor for a mother and unborn child be determined during pregnancy. If an expecting mother is Rh negative and her baby is RH is negative, there aren t usually any concerns. Conversely if the expecting mother is RH negative and her baby is Rh positive, the mother s blood might produce the anti-D antibodies. The effect of these antibodies on the development of the unborn child, who is Rh positive, are determined by many factors. There are medical interventions that can be taken under the supervision of a physician to protect the baby in utero. The Rh factor is important to determine in blood donations and transfusions. A person with the Rh positive factor will not make anti-Rh antibodies. Those with Rh negative factor will produce the antibodies. Therefore, someone with Rh+ blood can receive both Rh+ and Rh- transfusions, but those with Rh- can only receive Rh- blood. Blood type and Rh factor screening are done not only to categorize a blood donation. The Rh screening test result also allows a healthcare provider to give additional support to a patient if incompatibility is detected. Problem: In humans, the Rh factor genetic information is inherited from our parents, but it is inherited independently of the ABO blood type alleles. In humans, Rh+ individuals have the Rh antigen on their red blood cells, while Rh individuals do not. There are two different alleles for the Rh factor known as Rh+ and rh. Assume that a dominant gene Rh produces the Rh+ phenotype, and that the recessive rh allele produces the Rh phenotype. In a population that is in Hardy-Weinberg equilibrium, if 160 out of 200 individuals are Rh+, calculate the frequencies of both alleles. Youtube video: https://lnkd.in/dDBxqZ6w \#nikolays_genetics_lessons
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