why Inversion loops form in inversionheterozygotes

Q: Chimpanzees, gorillas, and orangutans all have 48 chromosomes, whereas humans have 46. Human…

A: When a part of a chromosome breaks off and gets translocated to another chromosome, leading to…

Q: What cohesins facilitate the attachment of sister kineto-chores to microtubules emanating from the…

A: The segregation of homologous chromosomes lies in them being pulled apart by microtubules. On one…

Q: Nondisjunction a phenomenon that is more serious when taking place at meiosis one that meiosis two,…

A: Nondisjunction refers to failure of separation of chromosomes (in meiosis I) or chromatids (in…

Q: term for random alignment of the homologs along the metaphase plate of meiosis

A:

Q: Diploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY,…

A: Human cell contains 23 pairs of chromosomes.  22 autosomes and 1 pair of sex chromosomes. Human male…

Q: Diagrammatic representation of monohybrid cross?

A: Monohybrid cross is a cross between two parents with pair of contrasting characters. For this…

Q: What cohesin by separase induces chromosome seg-regation during anaphase.

A: The chromosomes that compose every tetrad separate throughout anaphase I. However, the sister…

Q: With regard to the numbers of sex chromosomes, explain whydosage compensation is necessary

A: Epigenetic inheritance is one of the examples of non-Mendelian inheritance pattern. It is an…

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: What would be the result from a nondisjunction of chromosome 21 in a zygote that is 46,XY? Explain…

A: In genetics, nondisjunction refers to chromosomes or sister chromatids that do not separate properly…

Q: Explain why the homologous chromosomes of an inversion heterozygote can synapse only if an inversion…

A: Frans Janssen, in 1909, discovered Chiasmata. These are the points at which chromatids of homologous…

Q: Give an explanation for why nondisjunction of sex chromosomes is extra nicely tolerated than…

A: Each species has a unique chromosome number, such as 46 for a typical human body cell. This number…

Q: 2n = 2 pairs of G1 → S→ G2 homologous -> -> chromosomes Skip prophase I, do not draw crossing over…

A: Step 1: The image shows the cell cycle and the phenomenon of non disjunction in the form of a…

Q: In general, why do changes in chromosome structure or numbertend to affect an individual’s…

A: Chromosome is a compact structure of a DNA molecule wrapped around some proteins. It is generally…

Q: man who carries no aneuploidies. Match the description of the chromosomes inherited by each zygote…

A: Downs syndrome is the most common chromosomal disorder characterised by various clinical symptoms…

Q: why why heterozygosity for a deletion can be harmful?

A: Deletion refers to a type of mutation in which the genetic material in a chromosome is deleted or…

Q: hromosomes only pair during meiosis. Why is this pairing

A: Cell division is defined as the process by which cells multiply and involve nuclear as well as…

Q: What distal to them are responsible for holding the homologous chromosomes together during pro-phase…

A: Chiasmata is a point that links the two chromatids of homologous chromosomes together. At this…

Q: What type of chromosomal rearrangement occurs o Crossovers at a repeated sequence on two…

A: Mutations are changes that occurs in the deoxyribonucleic acid (DNA) sequence, either due to…

Q: POSSIBLE PC What is independent assortment during meiosis 1? if two individuals mate, and each is…

A: Independent assortment: one gene is independently transmitted from the other genes into the next…

Q: Drosophila melanogaster has which four linkage groups?

A: The tendency of the genes to locate on the same chromosome, to stay together in the hereditary…

Q: How many Barr bodies would you expect to see in a human cellcontaining the following chromosomes?…

A: BARR BODY It is a small, densely staining structure in the cell nuclei of females, consisting of a…

Q: Briefly explain why, in humans and other mammals, sex-chromosome aneuploidies are more common than…

A: A chromosome is an organized bundle of DNA found within the nucleus of the cell. Different living…

Q: What is the notation for the following cases? ( A female having Edwards syndrome (trisomy 18)

A: The chromosomal syndrome notation includes the total number of chromosomes, then the sex chromosome,…

Q: Chromosome inversion loops occur during meiosis in ______________ .   chromosome duplications…

A: Inversion is a type of chromosomal rearrangement in which a single chromosome breaks and rearranges.…

Q: Vhich of the following chromosomal rearrangements usually results in normal eiosis? translocation…

A: Chromosomal rearrangement, also known as DNA crossover, occurs during pachytene stage of first pro…

Q: Meiosis and germ cell formation in cell with four choromossomes can you see how chromosome segrate…

A: Meiosis is process of cell division in which a single cell divides two times and produce 4 new…

Q: Assuming sexual reproduction and that no mutations have occurred. Please draw one possible genotype…

A: Genotype It is a description of our DNA's pair of alleles. The genotype of an offspring is…

Q: Barr Bodies, Sex Chromosomes and Diploid Number Number of Barr Bodies Phenotypic Sex of Individual…

A: BARR BODY It is an inactivated, condensed X chromosome found in female cells. Barr bodies are…

Q: e sex chromosomes the smallest chromosome in a karyogram? if not, the

A:

Q: Polyploid plants form as a result of a beneficial mutation that often makes them larger and stronger…

A: Pluploidy refers to an extra set of chromosomes in an otherwise normal person. This extra set could…

Q: tructural errors can occur during Meiosis which can lead to h disorders. Examine the figure below…

A: Chromosome structural errors : These are changes to the structure or number of chromosomes  It can…

Q: Diploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY,…

A: Aneuploidy is a condition of having fewer or extra chromosomes than the normal genome number of the…

Q: The following normal human sister chromosomes DO NOT necessarily have in common with each other:…

A: BASIC INFORMATION CELL It is considered as the basic unit of life Every organism is made up of cell…

Q: In a Robertsonian translocation, reciprocal exchangesbetween two ____________ chromosomes generate a…

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

Q: Corn has a chromosome number of 2=20. Supposing there are different aneuploidy/polyploidy in corn,…

A: The sex chromosomes decide an individual's sex. The majority of people have two sex chromosomes, one…

Q: To define the adavantage and disadvantage of a compact chromosomal structure.

A: Chromatin A mixture of protein and DNA together makes up the chromatin. This chromatin is a…

Q: Name the disorder with choromosome compliment 22 pairs of autosomes +21st chromosomes +XY?

A: Normally every human cell contains 23 pairs of chromosomes i.e. 46 chromosomes but sometimes, some…

Q: During Prophase I, the homologous chromosomes formed a synaptonemal complex. O zygotene leptotene O…

A: Parent cell generally divides into daughter cells by one of the two methods - mitosis or meiosis…

Q: In animals there are many aneuploidies in sex chromosomes that have relatively mild phenotypes.…

A: Aneuploidy of autosomes is not tolerable and usually lethal because of the fact that embryos have…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.