Q Location On A Chromosome
The p region is represented in the shorter arm of the chromosome (p is for petit, French for small) while the q region is in the larger arm (chosen as next letter in alphabet after p). At either end of a chromosome is a telomere, a cap of DNA that protects the rest of the chromosome from damage.
Answer-a)AB/ab or AaBb Genes A and B are located on the same chromosome. There is a cross of two parents with genotypes AaBb(aB/Ab)x aa view the full answer. Previous question Next question Transcribed Image Text from this Question. Genes A and B are located on the same chromosome. If two individuals with the genotype shown below are crossed. Biology Q&A Library the location on a chromosome where a particular gene is located is known as the: A)allele B)dihybrid C)locus D)diploid E)autosome. A chromosome in which centromere is located in the middle portion, such chromosomes assume V shape at anaphase. Sub-Metacentic: A chromosome in which centromere is located slightly away from the centre point or has sub-median position. Such chromosomes assume J shape at anaphase. Acrocentric Chromosome. The first number indicates which chromosome (1-22) contains the gene. If the gene were located on one of the sex chromosomes, it would start with an ‘X’ or a ‘Y’ instead 3. The letter ‘q’ refers the arm on which the gene can be found. Chromosomes are divided into two sections by a constriction called the centromere.
Several chromosome regions have been defined by convenience in order to talk about gene loci. Most important is the distinction between chromosome region p and chromosome region q. These are virtual regions that exist in all chromosomes.
During cell division, the molecules that compose chromosomes (DNA and proteins) suffer a condensation process (called the chromatin condensation) that forms a compact and small complex called a chromatid. The complexes containing the duplicated DNA molecules, the sister chromatids,[1] are attached to each other by the centromere(where the Kinetochore assembles). The centromere divides each chromosome into two regions: the smaller one, which is the p region, and the bigger one, the q region. The sister chromatids will be distributed to each daughter cell at the end of the cell division.
![Q Location On A Chromosome Q Location On A Chromosome](https://www.researchgate.net/profile/Perumal_Venkatesan5/publication/288156282/figure/download/fig2/AS:313388900077569@1451729144358/The-BRCA1-gene-is-located-on-the-long-q-arm-of-chromosome-17-at-position-21.png)
The p region is represented in the shorter arm of the chromosome (p is for petit, French for small) while the q region is in the larger arm (chosen as next letter in alphabet after p).[2]
At either end of a chromosome is a telomere, a cap of DNA that protects the rest of the chromosome from damage. The areas of the p and q regions close to the telomeres are the subtelomeres, or subtelomeric regions. The areas closer to the centromere are the pericentronomic regions. Finally, the interstitial regions are the parts of the p and q regions that are close to neither the centromere nor the telomeres, but are roughly in the middle of p or q.
![Q location on a chromosome translocation Q location on a chromosome translocation](https://www.ncbi.nlm.nih.gov/books/NBK22266/bin/a13chr.jpg)
Q Location On A Chromosome Deletion
![Q location on a chromosome abnormality Q location on a chromosome abnormality](https://ghr.nlm.nih.gov/gene/RTTN/location.png)
References[edit]
P And Q Chromosome Arm
- ^'National Human Genome Research Institute (NHGRI) - Centromere'. National Human Genome Research Institute (NHGRI). Retrieved 2018-11-19.
- ^'Short arm of a chromosome'. MedicineNet. Retrieved 2016-04-10.