What is the difference between primary Down syndrome and familial Down syndrome? How does each type arise?

Q: What are nondisjunction?

A: A sister chromatid is defined as the identical copies (chromatids) formed by the DNA replication of…

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: How do the modes of transmission of autosomal recessive andautosomal dominant inheritance differ?

A: Answer: Introduction: Inheritance means the transfer of genetic data is from parent to child. There…

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 are the inheritance patterns and general clinical features of some common genetic disorders?

A: Genetic disorder  can be defined as the health problem  which caused by one or more abnormalities in…

Q: What are the inheritable patterns of a dominant and recessive lethal allele? Is Huntington Disease…

A: A large proportion of genes in an individual's genome are very important for survival for life.

Q: Is Miller Fisher syndrome hereditary?

A: Miller Fischer syndrome is a rare acquired nerve disorder that is characterized by abnormal muscle…

Q: How can you explain that not all Down syndrome cases are due to nondisjunction?

A: The syndrome can be analyzed as per the clinical signs and side effects that are associated with one…

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: How is prenatal diagnosis of Down syndrome achieved?

A: Genetic disorders result from chromosomal abnormalities like Down syndrome and Turner syndrome. A…

Q: What is known as Apical dominance ?

A: The development whereby, in an individual containing 2 allelomorphic types of a gene, one is…

Q: What are the similarities and the differences between codominance and incomplete dominance? What are…

A: Codominance and Incomplete dominance are two kinds of hereditary inheritance. Codominance basically…

Q: what is Nullisomy?

A: Each cell in the body contains the 23 pairs of chromosome or total of 46 chromosome, half of which…

Q: How and when does nondisjunction occur? What is the result of non-disjunction? In your own words

A: Cell division is the process by which a parent cell divides and makes two or more daughter cells. It…

Q: What are genomic imprinting and nondisjunction?

A: The process of genomic imprinting and nondisjunction are related to genetic material or genome.…

Q: What are the 3 types of Down syndrome?

A: Down syndrome is a kind of genetic disorder that results in developmental delays, intellectual…

Q: What is Down's syndrome? Give its symptoms and cause. Why is it that the chances of having a child…

A: Human genetic disorders are caused by the absence, excess, or abnormal arrangement of one or more…

Q: Why do most cases of Down syndrome originate from the mother? And how is this linked to maternal age…

A: Down syndrome also called "trisomy 21" is a condition in which a child is born having an additional…

Q: what are treatments for polycystic overy syndrome?

A: Polycystic ovary syndrome is the condition of ovary in which the follicles are solidified to form…

Q: What is Locus heterogeneity?

A: Inheritance of genetic diseases follows a simple Mendelian pattern of inheritance. Its study is…

Q: What is Dominance variance ?

A: Variations are the genetic features present in the organisms distinct from their parents.

Q: What is a recessive epistatic gene?

A: Epistasis Epistasis can be defined as the condition where phenotypic expression of one gene is…

Q: What is pleiotropy?

A: Pleiotropy refers to the expression of multiple traits by a single gene. These expressed traits may…

Q: What causes nondisjunction?

A: Chromosome is the package of densely packed chromatin fibres with DNA and histone proteins. In…

Q: Why the allele for Huntington disease is dominant?

A: Step 1 Huntington disease is an inherited disorder that causes the death of brain cells by the…

Q: What are mendelian disorders?

A: A Mendelian trait is one that is controlled by a single locus in an inheritance pattern. In such…

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 is it that genetic abnormalities that include an extra Y chromosome do not have a severe…

A: Genetically all human males normally have a XY chromosome whereas the females have a XX pair. They…

Q: What is an example of Mendelian inheritance?

A: Mendel on working on the pea plants proposed 3 mendelian laws, the traits or genes which inherit by…

Q: Distinguish among Klinefelter, Down, and Turner syndromes. Which syndromes are found in both sexes?

A: Introduction A genetic condition is an illness caused in part or entirely by a deviation from the…

Q: What are 3 disorders due to Nondisjunction?

A: Disease:   When an organism’s body system does not work properly or any organ affects by viruses,…

Q: What are some examples of non mendelian inherittance diseases?

A: According to the Mendelian inheritance the characteristics of an individual is determine by the…

Q: What is the difference between duplicate recessive epistasis and recessive epistasis? Give an…

A: Epistasis is defined as the process of gene interaction in which one gene mask the phenotypic…

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 is the difference between codominance and incomplete dominance?

A:

Q: What are co-dominance?

A: According to Mendelian inheritance, a single character is controlled by one or more genes where each…

Q: Are both incomplete dominance and codominance illustrated with two capital letters?

A: The type of relationship between alleles,with a heterozygous phenotype intermediate between the two…

Q: Is the Down syndrome inherited through Mendelian patters? If not how it is inherited?

A:

Q: what are the types of down syndrome

A: Down syndrome is a condition in which a person has an extra chromosome. people with Down syndrome…

Q: What are the various phenotypic changes in cri du chat syndrome ?

A: A syndrome is a medical condition in which a group of symptoms appears. These symptoms are generally…

Q: What is the difference between polygeny and pleiotropy?

A: Biological inheritance, also called heredity, is the process by which different traits are passed on…

Q: Are all forms of Down syndrome due to non-disjunction?​YES​​​ or NO​?

A: Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or…

Q: What is primary non disjunction?

A: During cell division, in anaphase stage when homologous chromosomes have failed to separate or…

Q: What are some examples of Nondisjunction?

A: Non-disjunction refers to failure of the two members of a chromosome pair to segregate from one…

Q: Which are the Several clues suggest that Huntington disease is transmitted by a dominant allele of a…

A: Genetic disease is caused due to chromosomal aberrations or mutation in the specific genes. Most of…

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.