How is the Barr body different from the other Xchromosome in this cell?

Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XXYY…

A: The male-determining gene in humans is termed as the sex determining region Y (SRY) gene. Generally…

Q: In meiosis, after telophase I, do other cells (comparing one another) have the same combination of…

A: Cell cycle consists of stages of cell growth and reproduction. In M phase of cell cycle, cell…

Q: How does the Xist gene make a Barr body?

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

Q: What does o Cell that contains the transgene must have the ability to develop into gametes mean for…

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: What is parental or noncrossover gametes?

A: Actual traverse during meiosis I is a typical occasion. The impact of this occasion is to improve…

Q: In the absence of SPO11, what meiotic events will be affected during early prophase I?

A: Spo11 protein encoded by gene Spo11 plays an important role in creating double-stranded breaks and…

Q: What is the probability that, in an organism with a haploid number of 10, a sperm will be formed…

A: Meiosis is a type of cell division where four gametes or daughter cells are produced as a result of…

Q: Crossover occurs during what phase? What is this process and why is it important?

A: ANSWER;- Crossing over occurs during prophase I of meiosis before quadruplicates are aligned along…

Q: What is crossing over, when does it occur and what is its importance?

A: A chromosome is an organized package of DNA found in the nucleus of the cell. Different organisms…

Q: If there are 9 chromosome pairs, how many univalents are there at anaphase?

A: The chromosomes are found in eukaryotic cells that is the compact form of DNA. The DNA with histone…

Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XO with…

A: The male sex-determining gene in human is termed as the sex determining region Y (SRY) gene.…

Q: What is a Barr body? How is it related to the Lyon hypothesis?

A: Humans exhibit XX-XY type of sex determination.

Q: A diploid organism is heterozygous for 4loci,how many types of gamete can be produced?

A: 'Locus' is a term which is used to denote the fixed position of a gene on the chromosome. A gene…

Q: what is the benefit of crossing over?

A: REPRODUCTION:- It is the production of offspring from the parents. It is of two types:- 1)Asexual…

Q: What causes the cleavage furrow to ingress?

A: causes was;

Q: what are the clones of aneuploid cells

A: The cells that have abnormal number of chromosomes are known as aneuploid cells. This condition is…

Q: If a diploid a 40 pair of chromosomes, what is the chromosome number by the end telophase?

A: Introduction: Cell cycle is an ordered sequence of events occurring in a cell. Cell cycle results in…

Q: Why is an X chromosome needed for survival?

A: The sex chromosomes or allosomes are X and Y chromosomes which determine the biological sex of an…

Q: What causes chromosomal rearrangements?

A: Chromosomes carry the genetic material DNA. Gene is a segment of DNA. The necessary information for…

Q: How many Barr bodies are contained within the nucleus of a person with Monosomy X? In the nucleus of…

A: Introduction:- The X chromosome is shared by both males and females. Female somatic cells do not…

Q: Why is the Barr body more brightly stained by DNA-specific dye in a cell nucleus?

A: Introduction: Barr body is the inactivated X chromosome found in the cells containing more than one…

Q: On rare occasions, a human male is born who is somewhat feminizedcompared with other males.…

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: What is a Barr body, and where is it found in a cell?

A: A chromosome is a long DNA molecule with part or the whole hereditary material of a creature. Most…

Q: What does an extra 22 chromosome mean?

A: Chromosome is the DNA molecule with part or all of the genome (genetic material) of an organism. In…

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…

Q: What is the inactivation ofthe X chromosome? What is aBarr body?

A: Chromosomes are long thread-like structures that carry coded genetic information in the form of DNA.…

Q: Does mitotic recombination occur in a gamete (sperm or egg cell) or in a somatic cell?

A: Cell division is typically a part of a broader cycle of cells. There are two distinct forms of cell…

Q: Why do females have Barr bodies?

A: The sex chromosomes present in the males differ from the sex chromosomes present in the females. The…

Q: . When a cell of genotype A/a ; B/b ; C/c having all thegenes on separate chromosome pairs divides…

A: In the process of mitosis, the daughter cells that are produced will have the same genotype.

Q: How mang sister chromatids are found in a single human cell undergoing Prophase II of Meiosis?

A: Meiosis is a reduction division. Number of chromosomes gets reduced by half in daughter cells.…

Q: Which non-disjunction event has more chromosome number aberrations? Why?

A: Meiosis is a reductional division. It produces haploud gametes.

Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XXY with…

A: A gene is a unit of genetic material present within the DNA (deoxyribonucleic acid). Each gene…

Q: During embryonic development, what event causes one of the twoX chromosomes to be remain active,…

A: Introduction: X chromosome inactivation is also referred to as Lyonization and is a process in which…

Q: Why does aneuploidy increase with maternal age?

A: A normal human cell has 46 chromosomes. Aneuploidy is a condition when a human cell has an abnormal…

Q: What is the inactivation of the X chromosome? What is a Barr body?

A: It is believed that women are more susceptible to X chromosome inactivation than men are. X…

Q: For the following chromosome complements, what is the phenotypic sex of a person who has Q. XY with…

A: The male sex-determining gene in humans is termed as the sex determining region Y (SRY) gene.…

Q: What is a sex pilus and which cell type, F- or F+,would produce this structure?

A: The transfer of the genetic material from one bacterium to another through direct contact is termed…

Q: What process occurs when genes swap position on a chromosome during meiosis, as in the case of Cru…

A: Meiosis is a cellular process where a single cell divides two times to produce four cells containing…

Q: What is the cross between the progeny of F1 and the homozygous reccessive parent called? How is it…

A: Introduction  Monohybrid cross deals with one character controlled by one pair of alleles such as…

Q: If there are 9 chromosome pairs, what is the chromosome number at telophase I (after cytokinesis)?

A: * Meiosis is of two types  Meiosis I Meiosis II * Meiosis I consists of four stages  Prophase 1…

Q: Why is the Barr body more brightly staining in a cellnucleus than the other chromosomes?

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: Why some Autopolyploids are sterile?

A: Ploidy level of an organism represent the set of chromosomes in it. Diploid means complete set of…

Q: What is the importance of chromosomal crossover events during meiosis I? Explain in a detailed…

A: Meiosis is a kind of cell division that produces four haploid daughter cells, each having half the…

Q: What is the relationship between the severity of symptoms and the size of the chromosome involved in…

A: More the size of the chromosomes involved in the trisomy, more will be the severity of symptoms.…

Q: What is the purpose of Barr bodies?

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: