A cytogeneticist is studying the cells from an abnormal female monkey. In some cells, she finds that both X-chromosomes are active (i.e. not packaged into a Barr body), although one of the X-chromosomes appears shorter. She also finds that one of the autosomes are packaged as a Barr body, and she suspects that a translocation event might have been involved. By referring to the mechanism of X-chromosome inactivation, explain the observations made by the scientist.

Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…

A: Crossing over: It occurs during prophase I and involves the exchange of genetic material between…

Q: The data below are from a DNAse-Seq experiment of chromosome 22. DNAse-seq is another method for…

A: The DNAse-Seq experiment is a method used to analyze chromatin organization by digesting regions of…

Q: What are translocation and deletion events that mayoccur during chromosomal duplication or assembly?

A: Cellular biology explains the events starting from DNA synthesis, to replication, transcription, and…

Q: The Y chromosome contains large amounts of constitutive heterochromatin. Why might there be more…

A: Constitutive heterochromatin is generally found in the centromere regions and also, at the telomere…

Q: cell is aneuploid, do you expect it to express a higher or lower level of the proteins encoded on…

A: Normally the cells are euploid which means that they are exact multiple of the haploid number.…

Q: Outline the molecular steps in the process of X-chromosomeinactivation (XCI). Which step plays a key…

A: Euchromatin is defined as the active form of chromosomal DNA whereas heterochromatin is defined as…

Q: Prader-Willi syndrome and Angelman syndrome

A: Genetic disorders: The inherited medical condition or disorder caused by a DNA abnormality is known…

Q: WHIM syndrome is a disease of the immunesystem resulting in warts and frequent infections.The…

A: WHIM syndrome is an autosomal dominant combined deficiency of the immune system and is caused by the…

Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…

A: Inversion usually occurs in the prophase 1 in which two break can occur in the area and can thus…

Q: In which chromosome can you find FOG2?

A: Chromosome is a long DNA molecule which is found in nucleus of all cell.

Q: why The chromatids formed byrecombination within the inversion loop of a pericentric…

A: When the region between two breaks of the same chromosome rotate 180°, it results in chromosomal…

Q: Person A has a mutation in a chromosome in a liver cell, while person B has a mutation in a…

A: Mutation refers to sudden heritable change in the phenotype of an individual. In the molecular term,…

Q: “In an organism that reproduces asexually, there is no difference between a somatic cell mutation…

A: Somatic mutations These refers to the mutations in a single body cell, which cannot be inherited.…

Q: The birth of this child prompted the Dentons' physician to order a chromosome study of parents and…

A: In order to fully understand the question being asked, we must recall the following information: (1)…

Q: With respect to X chromosome inactivation, which of the following statements are correct? OX…

A: X-chromosome inactivation happens at random in female cells during development for one of the two X…

Q: the white-eyed w+ gene from one end of the X chromosome locus (w) moves the to a location nearer to…

A: This is an example of epigenetic modification. It alters the gene expression pattern.

Q: With regard to development, what would the dire consequences beif polycomb group complexes did not…

A: Polycomb-group proteins basically refer to the proteins possessing the ability to remodel…

Q: What is the spreading phase of X-chromosome inactivation? Whydo you think it is called a spreading…

A: Heterochromatization of one X chromosome begins in the late blastocyst stage of the embryonic life.…

Q: The dominant condition elliptocytosis causes red blood cells to become misshapen into oval-shaped…

A: answer given below

Q: 14 13 1a 131 is a diagram of chromosome 17.

A: A chromosome is a long DNA molecule that contains part or all of an organism's genetic material.…

Q: Which of the following is NOT an effect of histone acetylation on chromatin structure? Selected…

A: Histone acetylation is a post-translational modification that adds acetyl groups to lysine residues…

Q: What is a Barr body? How is its structure different from that ofother chromosomes in the cell? How…

A: Chromosomes are the carrier of genetic material deoxyribonucleic acid (DNA). They are coiled in…

Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.