How is it that genetic abnormalities that include an extra Y chromosome do not have a severe phenotype?

Q: What is Extrachromosomal inheritance?

A: Inheritance is the process by which this genetic information present in the genes is passed on from…

Q: What is the gene in the human chromosome that determines the "maleness"?

A: Gene is the sequence of nucleotides that encode a particular protein. The genes are present in the…

Q: What is sex linked inheritance and why is the pattern of inheritance different for males vs females?

A: Sex linked inheritance is the sex-specific pattern of inheritance and presentation when a particular…

Q: What are twins?Genetically what are the twotypes of twins that can begenerated?

A: Pregnancy is also termed as gestation during which one or more offspring develop in the uterus of a…

Q: How many types of trisomy are there?

A: Trisomy is the presence of one extra copy of a chromosome in the genome. It is mostly caused by the…

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

A: Genes located close together on the same chromosome are transmitted as a single unit to the daughter…

Q: What environmental factors may increase incidence of chromosomal abnormalities? Name at least three.

A: Chromosomal abnormalities or aberration is defined as the defect in the structure or the number…

Q: What are polytypic genes?

A: Genes are defined as the building blocks and the coded information that defines the complete physico…

Q: What is Down syndrome ? When does Down syndrome occur ?

A: Human genetic disorders are caused due to the absence or excess or abnormal arrangement of one or…

Q: What is epistasis? What is the difference between dominant epistasis and recessive epistasis?

A: Genetics entails a phenomena, epistasis wherein the impact of a gene mutation depends on the absence…

Q: What are the types of aneuploidy?

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

Q: How is it that some chromosomal abnormalities are incompatible with life as early as immediately…

A: Chromosomal abnormalities are one of the reasons of miscarriage and stillbirth and spontaneous…

Q: Which are the two kinds of biological abnormalities that could conceivably be inherited ?

A: Biological abnormalities refer to any condition of the body that alters from the normal parameter;…

Q: How often do mistakes occur in meiosis?

A: Answer: Introduction: Meiosis is the process in which the parent cell divides twice into four…

Q: What are the effects of aneuploidy?

A: Aneuploidy refers to losses or gains of individual chromosomes from the normal set of chromosomes.…

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: What is polygenic inheritance, and how is it different fromcodominance?

A: The law of dominance does not occur universally. After mendel several cases were recorded by…

Q: Why do extra copies of genes sometimes cause drastic phenotypic effects?

A: The genes are the hereditary unit of an organism which are passed on from the parental generation to…

Q: How is Down syndrome caused?

A: Human genetic disorders are caused due to the absence or excess or abnormal arrangement of one or…

Q: What are some diseases or genetic abnormalities caused by dominant genes? Why are severe dominant…

A: Genetic disorders are conditions that are caused due to aberration in the chromosomes and are mostly…

Q: What is polyembryony?

A: An embryo is defined as the early developmental stage of eukaryotic organisms following the…

Q: Do you know of any genetic diseases or disorders that result from errors in mitosis or meiosis? How…

A: Introduction: Mitosis and meiosis are processes and fundamental stages of cell division and cell…

Q: How to reduce chromosomal abnormalities?

A: Chromosomal abnormalities can be structural or numerical. A structural chromosomal abnormality means…

Q: What are chromosomal disorders?

A: The chromosomes are thread-like structure situated inside the nucleus of plant and animal cells.…

Q: Other than the fact that a Y-linked trait appears only in males, how does the pedigree of a Y-linked…

A: Y-linked traits are known to occur in all male descendants of an affected male but never occurs in…

Q: Can you fix chromosomal abnormalities and Can you prevent chromosomal abnormalities?

A: Humans are diploid (2n) as they contain two sets of chromosomes. One set of chromosomes is inherited…

Q: What is incomplete penetrance and what causes it?

A: Introduction  Any gene have two alleles pairs viz. Dominant or Recessive. The allele which gets…

Q: What is the most common chromosomal disorder?

A:

Q: What causes Extrachromosomal inheritance?

A: Inheritance or heredity is passing-on one trait form the parents to the progeny by either asexual or…

Q: What are the side effects of Irregularities in the process of chromosome formation or fetal…

A: Mutations are sudden changes that are inheritable and can contribute to a permanent change in the…

Q: Why do unrelated children with a disorder such as Down syndrome resemble each other more closely…

A: Down syndrome is a genetic disorder that is caused due to presence of an extra copy of the 21st…

Q: What are the two types of twins and how do they arise?

A: The period from conception to birth is called pregnancy. When an egg is fertilized by a sperm, the…

Q: which mode of inheritance does this trait show (autosomal recessive, autosomal dominant, X-linked…

A: The given image is of a pedigree chart. Squares represent males and circles represent females. Black…

Q: How to diagnose aneuploidy?

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

Q: How does the pedigree of an autosomal recessive trait differ from the pedigree of an X-linked…

A: Introduction Pedigree Analysis: this is the new approach to study the inheritance pattern in the…

Q: What are the sex-linked disorders that are inheritable?

A: The X and Y chromosomes are defined as the sex chromosomes in humans. A female has two X…

Q: What is the cause of aneuploidy?

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

Q: What chromosome is associated with autism?

A: Autism is a condition that appears at an early age of childhood. The person who suffers from autism…

Q: What is a trait for which symptoms are not present at birth and manifests themselves later in life?

A: Genetics is the study of inheritance of genes among the generations that deals with heredity and…

Q: What characteristics are exhibited by a Y-linked trait?

A: Genetic material is any material of animal, microbial, or plants, or other origin that carries…

Q: what are  chromosomal abnormalities??

A: Deoxyribonucleic acid (DNA) is a molecule composed of two polynucleotide chains. It coils around…

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: What causes most of the phenotypic abnormalities in someone with Down's Syndrome? A) They have…

A: Aneuploidy is the condition in which abnormal number of chromosomes are seen in the cell.Normally…

Q: How do the four cells at the end of meiosis differ from the original mother cell?

A: Meiosis is a process in which four cells containing half the original amount of genetic material are…

Q: What are the possible effects of chromosomal mutations?

A: Malfunctioning of the kinetochore can lead to a chromosomal abnormality that is known as…

Q: What criteria or features are used to identify each chromosome by number?

A: *NOTE: Kindly repost for other question. Dear Student as per the guidelines we are supposed to…

Q: What is uniparental disomy and how does it arise?

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