Explain why the breakpoints of inversions determinewhether they have phenotypic effects

Q: Describe the effect of primitive streak duplication.

A: The primitive streak :- it is a structure that forms in the blastula during the early stages of…

Q: Define pericentric inversion and paracentric inversion?

A: A chromosome rearrangement that is characterized by the breakage of a single chromosome followed by…

Q: Explain the causes of familial Down syndrome.  How does it differ from Down syndrome due to…

A: Down syndrome is a disorder in which individuals have an extra copy of chromosome 21 instead of two…

Q: What is aneuploidy? Whatare the conditions caused bythe aneuploidies?

A: The chromosomes are thread-like structure located in the nuclei of both plant and animal cells. They…

Q: An individual named Pat with Prader-Willi syndrome produced anoffspring named Lee with Angelman…

A: Prader-Willi syndrome and Angelman syndrome are two different disorders which are associated with…

Q: What are the main diseasescaused by errors of thenumber of sex chromosomesin the cells of an…

A: The error in number of sex chromosome in the cells of an individual cause chromosomal disorder.…

Q: What is the karyotypefound in Down syndrome?

A: During the most recent years, Down disorder has been the focal point of uncommon consideration. Down…

Q: Explain the Types of inversions

A: Inversion is a condition in which a chromosome segment is broken in two places, turned upside down…

Q: Inversions are said to “suppress crossing over.” Is this terminologytechnically correct? If not,…

A: An inversion is a type of chromosomal variation that arises due to reversing (180 degrees) of a…

Q: Differentiate between pleiotropy and epistasis.

A: A gene is that sequence of DNA that codes for a particular trait, it may or may not be influenced by…

Q: How often (copy number variation) CNV arises after MZ twinning ?

A: Copy Number of Variations (CNV) recognized mostly in brain cells. after MZ twins CNV cause is…

Q: explain the Phenotypic effects of duplications

A: Duplication of chromosome refers to an addition of an extra chromosomal arm attached to a…

Q: nd explain it using the following headings: O Name of disorder ) type of variation in chromosome…

A: When a cell is not dividing, chromosomes are not visible in the nucleus, even under a microscope.…

Q: What is the effect of inversion mutation?

A: Mutation is a change in the sequence of genetic material either due to the mistake in replication or…

Q: What is a chromosomal island and how can one be identified asbeing of foreign origin?

A: The term chromosomal island is generally used in microbiology with regard to the bacteria. The…

Q: differentiate between Pericentric inversion and Paracentric inversion

A: The variations in the chromosome structure may arise due to the following four processes: 1.…

Q: Explain what detrmine that  inversions  have phenotypic effects

A: Chromosomal rearrangements are the mutations in chromosomes that alter the structures of individual…

Q: What is inversion heterozygotes ?

A: Heterozygote can be defined as the genes that are  for the specific trait are considered to be…

Q: List some syndromes that result from inheritance of anabnormal sex chromosome number

A: Sexual defects in chromosomes are sex-specific. Normal males inherit a chromosome of X and Y, while…

Q: Predict phenotypes associated with nondisjunctionof sex chromosomes.

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

Q: Briefly describe nondisjunction in meiosis and identify several potential consequences. In other…

A: Meiosis is the type of cell division that occurs in the sex cells to produce gametes in the form of…

Q: Which of the following types of chromosomal changes would youexpect to have phenotypic consequences?…

A: Chromosomes carry the genetic material DNA. Chromosomes may undergo rearrangements that are the…

Q: 2 3 5 8. 10 11 12 13 14 15 16 17 18 19 20 Y 21 22 (4) © 2006 Brooks/Cole - Thomson Fig. 6-18b, p.135

A: KARYOTYPING It is the process by which photographs of chromosomes are taken in order to determine…

Q: Distinguish between pericentric and paracentric inversions.

A: Inversion is when a piece of a chromosome is broken and it is arranged after inverting it.

Q: Identify the type of chromosomal aberration described in each of the following cases and provide and…

A: A chromosome is a DNA molecule wrapped compactly around some protein molecules called histones. It…

Q: Which of the following statements is true regarding the phenotypic effects of inversions? Select ALL…

A: Inversion  Inversion is a kind of mutation in the chromosomes where part of a chromosomes is cured…

Q: Explain how nondisjunction can affect the normal cell division.

A: Introduction The "cell cycle", also known as "cell division", is a set of processes that occur in a…

Q: Use karyotype nomenclature, for each diagram. (Total # of chromosomes, sex chromosomes, any added or…

A: Genetic disorders are the type of disorders that occur due to the presence of chromosomal…

Q: Is it possible for an unaffected female to havefemale offspring with red–green color blindness?

A: When the mutation is on the gene of the X chromosome, it is called the X-linked inheritance. As…

Q: Define nondisjunction and explain how it causes aneuploidy. Name two syndromes resulting from…

A: The chromosome is the package of densely packed chromatin fibers with DNA and histone proteins. In…

Q: Can structural aberrations on certain chromosomes lead to aneuploidy? If yes, explain.

A: If a sex cell affected by nondisjunction undergoes fertilization, the resulting offspring will have…

Q: describe the Phenotypic effects of inversions

A: Chromosomal rearrangements are the mutations in chromosomes that alter the structures of individual…

Q: Differentiate between parental ditype (PD), nonparental ditype (NPD), and tetra type (T).

A: The spores are the meiotic products of a yeast. They remain packed in the parent cell to form a…

Q: Incomplete dominance and epistasis are both terms thatdefine genetic relationships. What is the most…

A: Genes come in pairs and are responsible for the inheritance and expression of the associated…

Q: explain why Chromosome Loss CausesMosaicism

A: Chromosome can be defined as the threadlike structure based on its location inside the nucleus of…

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

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

Q: What is the rule of inversion?

A: Genes are the functional unit of heredity. The genes code for proteins which are vital for growth…

Q: What is the difference between a paracentric and a pericentric inversion?

A: Chromosomes are thread-like structures situated inside the nucleus of plant and animal cells. Each…

Q: A fruit fly was found to be heterozygous for a paracentric inversion. However, obtaining flies that…

A: A paracentric inversion is a type of chromosomal aberration characterized by an inverted segment of…

Q: What types of chromosomal disorders are easily seen with a karyotype?

A: KARYOTYPE:- It is the complete set of chromosomes of an individual used to check for any…

Q: Differentiate a multifactorial disorder from a chromosomaldisorder.

A: A genetic disorder is a discorder caused by a whole or partly change in the sequence of DNA from…

Q: Explain how nondisjunction in meiosis is responsible for chromosome abnormalities such as Down…

A: Amongst all the chromosomal disorders, deformities in chromosome number are very easily recognisable…

Q: explain the Nondisjunction during second meiotic division

A: The cell cycle is a flow of events that consists of cellular division as well as cell growth. This…

Q: Differentiate between parental ditype (PD), nonparentalditype (NPD), and tetratype (T).

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

Q: The karyotype of a young girl who is affected with familialDown syndrome revealed a total of 46…

A: Translocation is the exchange of genetic material between the chromosomes and can be balanced and…

Q: Explain the term pleiotropy.

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

Q: give an example of inversion?

A: An Inversion is a abnormal chromosomal rearrangement in which chromosomal segments are reversed end…

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.