describe Genesis of an Hfr chromosome

Q: Define gene knockout.

A: A gene is the basic and functional unit of heredity and can be defined as a functional part of DNA…

Q: Describe the "folded-fiber" model of the mitotic chromosome.

A: Folded fibre model This model of chromosome was proposed by DuPraw in 1965 through his studies on…

Q: Describe the mechanism of chromosome compaction

A: Answer:- The chromosomes contain the genetic material of the cell. It contains DNA in coiled form.…

Q: During crossing over, does the segments of DNA being exchanged between chomosomes contain the same…

A: Most organisms that endure sexual reproduction contain 2 varieties of cells in their body – haploid…

Q: On what chromosome is the CFTR gene located?

A: CFTR stands for Cystic Fibrosis Transmembrane Conductance Regulator. CFTR gene produces CFTR…

Q: Define about copy number variations (CNVs) ?

A: Genomics is the study of genomes through analysis, sequencing and mapping of genes and non-…

Q: Describe the folded-fiber model of the mitotic chromosome

A: Taylor and his coworkers introduced this model of chromosome structure in 1957, 1963 and is based on…

Q: Give a well labelled diagram of metaphasic chromosome.

A: The cell can divide either by mitosis or meiosis. Meiosis occurs in germ cells like egg and sperm.…

Q: Are all genes transcribed in differentiated cells?

A: Cellular differentiation is the mechanism by which a cell transformed from one cell type to another.…

Q: Define promoter-fusion.

A: Promoter-fusion are useful to understand gene expression. A promoter is a sequence of DNA that…

Q: Expand the term hnRNA?

A: RNA stands for ribonucleic acid and it is a type of nucleic acid. Some of its important function…

Q: Explain about inactivated X chromosome in female mammalian cells ?

A: The sex of the offspring is generally genetically determined by the genes present on the sex…

Q: Draw a well labelled diagram of metaphasic chromosome.

A: The cell can divide either by mitosis or meiosis. Meiosis occurs in germ cells like egg and sperm.…

Q: Describe how different types of chromosomalrearrangements  generate new gene products.

A: Chromosomes are composed of mainly deoxyribonucleic acid (DNA) and binding proteins.

Q: Explain the mechanism and types of the cleavage.

A: Cleavage in developmental biology refers to the cell division occurring in the early stages of the…

Q: Define reciprocal translocation

A: Chromosomal rearrangement is a mutation, which is a type of chromosomal abnormality that involves…

Q: Difference between VNTR and hnRNA?

A: Deoxyribonucleic acid (DNA) is the genetic material encoded with thousands of genes. These genes are…

Q: Explain the construction of knockout mice?

A: Knocking out the action of a gene gives significant insights about what that gene ordinarily does.…

Q: Which are the events causing loss-of-heterozygosity in somatic cells of RB+/RB− individuals?

A: The DNA (deoxyribonucleic acid) is the genetic material that is inherited by the progeny from the…

Q: The transposase enzyme is essential for transposition because

A: Answer:  Transposase is an enzyme which required for the transposition of elements of DNA.

Q: explain Chromosomal rearrangements caused by TEs

A: Transposable elements or transposons are segments of DNA that can move around the genome.  It can…

Q: List several ways in which telophase appears to be the reverse ofprophase and prometaphase.

A: In eukaryotes, there are two types of cell division, namely mitosis and meiosis. Mitosis occurs in…

Q: Describe the cytological observation that suggests that crossing over occurs during the first…

A: The reductional cell division is the meiosis. It happens in two major stages- meiosis I and meiosis…

Q: Contrast the structures and mobilization mechanisms ofretrotransposons and DNA transposons.

A: The DNA segments that move from one region in the genome into another region are called transposable…

Q: Define gene locus

A: Gene is basic unit of heredity that is responsible for physical and functional activity.

Q: explain Translocations that generate oncogenes

A: A gene that has the potential to cause cancer is called oncogene. In a tumor cell, these genes are…

Q: describe X-chromosome reactivation.

A: The X chromosome is one of the sex chromosomes that is an essential chromosome for survival. The X…

Q: How epistasis causes unexpected inheritance pattern of ABO blood type?

A: Genetics is a branch of science that deals with the study of genes, heredity, and genetic variation…

Q: Contrast the   mobilization mechanisms ofretrotransposons and DNA transposons.

A: Transposable elements (TEs) are the small segments of DNA that can move from one position to other…

Q: Explain the unique features of Ig genes.

A: Ig genes encode Immunoglobulins which provide protection to our body from Pathogens or foreign…

Q: What is the meaning of term haploinsufficiency?

A: The gene is the basic physical and functional unit of heredity. Genes are made up of…

Q: Explain how does the hnRNA becomes the Mrna?

A: DNA contains the instructions for protein synthesis. Proteins in turn determine structure and…

Q: Explain the inactivation of the X chromosome or Lyonization.

A: A classic example of X inactivation is seen in calico cats. As a result tortoiseshell coat pattern…

Q: List the components of the replisome.

A: Deoxy ribonucleic acid (DNA) is the genetic material of most organisms that carry coded genetic…

Q: name the elements that must be included in an artificialchromosome.

A: Artificial chromosomes are synthetic chromosomes which are composed of DNA fragments integrated into…

Q: explain through diagram  Genesis of an Hfr chromosome

A: The mechanism involving transfer of genetic material between species of unrelated generations is…

Q: What events does the RecA protein facilitate?

A: Introduction  DNA strands is composed of nucleotide base pairs sequence such as Adenine, guanine…

Q: Differentiate between Maternal and Paternal chromosomes.

A: Chromosomes are long thread like structures present in all the cells of the body. The number of…

Q: Explain the fate of transferred chromosomal DNA ifrecombination does not occur in the recipient…

A: Conjugation, transformation, and transduction are the three processes through which a cell can…

Q: Are the D-positive fetal cells in Rh-HDFN heterozygous, homozygous, amorphic, or homologous?

A: Introduction Rhesus (Rh) factor is a protein located on the surface of red blood cells that is…

Q: Explain the Levels of Chromosome Compaction?

A: Chromosome compaction is the process in which a large DNA molecule undergoes a transition between an…

Q: what are the normal funtions of the p53 gene

A: p53 gene is also called as tumour suppressor gene or Tp53 gene produces the protein called tumour…

Q: Describe how triplex DNA is formed.

A: If three oligosaccharides winded around each other to form a triple helical structure, then that…

Q: define Haploinsufficiency

A: Haploinsufficiency basically refers to the condition in the diploid organism that demonstrates the…

Q: Describe the basis for chromosome mapping in the Hfr x Fcrosses

A: Gene transfer is the method of inserting genetic material (DNA or a gene of interest) into cells…

Q: Define X chromosome

A: Chromosomes are observed in the cell's nucleus and contain the genetic material of the cell. In…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.