A condition known as icthyosis hystrix gravior appeared in a boy in the early eighteenth century. His skin became very thick and formed loose spines that were sloughed off at intervals. When he grew up, this “porcupine man” married and had six sons, all of whom had this condition, and several daughters, all of whom were normal. For four generations, this condition was passed from father to son. From this evidence, what can you postulate about the location of the gene?

Q: Why are chromosomal aberrations considered to have less significance than gene mutations for…

A: Chromosomal aberration refers to the alterations in a number of chromosomes such as loss or gain of…

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: What is PID? What causes it?

A: It consists of primary sex organs called gonads which produce gametes and hormones, secondary sex…

Q: How are epialleles different from genetic alleles, such as those that encode differences in the…

A: Alleles are the different forms of a particular allele. It is a different sequence at the same…

Q: Junctional epidermolysis bullosa (JEB) is a severe skin disorder that results in blisters over the…

A: Junctional epidermolysis bullosa is type of skin disorder in which blisters develop on the skin of…

Q: Thomas discovered a devastating piece of family historywhen he learned that his brother had been…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: what is the probability that he might be a carrier of the recessive gene?

A: Cystic fibrosis is associated with the CFTR gene that encodes a protein that helps thin the mucous…

Q: origin and fate of the progenitor cells of the LGE and which type of migration do these progenitor…

A: LGE or lateral ganglionic eminence along with the MGE or medial ganglionic eminence form the basal…

Q: How much of an impact do environmental factors (such as changes in lifestyle) have on Progeria…

A: Diseases caused by the the damaged or mutated LMNa gene that codes for lamin protein. This protein…

Q: Given that DNA viruses can be carried in the DNA of the host cell’s chromosomes, comment on what…

A: Viruses are microscopic particles made up entirely of genetic material (DNA or RNA) and a protein…

Q: What is importance of barr body

A: Chromosomes are defined as the thread-like structures that carry genetic information. There are 23…

Q: How many of the following people would have cells containing ONE Barr Body? 46,XY 46,XX 47,XYY…

A: Barr bodies are inactive X chromosomes in female somatic cells with more than one X chromosomes.They…

Q: What is the type of genetic inheritance of color blindness? Is color blindness more frequent in men…

A: Colour blindness is a condition in which a person is incapable to see colours normally. Colour…

Q: On rare occasions, people are born with a condition known as uniparental disomy. It happens when an…

A: Human contains two number of chromosomes 15, one inherited from mother (maternal) and one from…

Q: In Cystic Fibrosis: How is the gene/chromosome affected? How is the cell, tissue, and body systems…

A: Cystic fibrosis is an innate sickness that influences the lungs and stomach related framework. The…

Q: What is the difference between a lesion and an ablation?

A: Cells are the structural and fundamental units of life. Cells that possess similarity in structure…

Q: If an infectious disease was transmitted from the maternal parent to the offspring through the egg,…

A: The cytoplasmic inheritance is a kind of non-Mendelian inheritance. In such type of inheritance, a…

Q: Why dominant negative mutation shows the haploinsufficiency  ?

A: A mutation is a change that occurs in our DNA sequence, either due to mistake when the DNA is copied…

Q: Brachyolmias are said to be heterogeneous and inherited in both dominant and recessive manners. What…

A: Brachyolmia is a rare type of bone disorder, which is genetically and clinically heterogenous in…

Q: The Mic2 gene in humans is present on both the X and Y chromosome. Let’s suppose the Mic2 gene…

A: Autosomes refer to the chromosomes other than sex chromosomes. These chromosomes are present in…

Q: Yesterday, when Daniel was showering after a basketball game in the gym, one of his friends asked,…

A: Many of the people on the earth are nowadays affected by the dreadful disease cancer. The cancer is…

Q: What is Locus heterogeneity?

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

Q: Junctional epidermolysis bullosa (JEB) is a severe skin disorder that results in blisters over the…

A: Junctional epidermolysis bullosa (JEB) is type of skin disorder in which blisters develop on the…

Q: During growth, can a patch of tissue with a white phenotype give rise to a patch with a green…

A: Plants are multicellular organisms in the kingdom Plantae. Plants have an essential role in the…

Q: In individuals affected by cystic fibrosis, salt crystals may appear after perspiration dries up. In…

A: Cystic fibrosis is an autosomal recessive disorder.   Cystic fibrosis is a inherited disease that…

Q: Which of the following is an accurate model and description of anaphase IIII in Cape parrots?

A: Answer :- As per the Karyotype of the somatic cells from the cape parrots obtained, they have total…

Q: If m-m- females produce useless eggs, then how are m-m- produced?

A: Sexual reproduction refers to the form of reproduction that occurs through the union of male and…

Q: Sickle-cell disease is an autosomal recessive disorder that causes the red blood cells of an…

A: Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria is a…

Q: following is an example of epistasis?

A: Epistatis: It is defined as the the action of masking one gene upon expression of another gene. Even…

Q: Besides CFTR, what othe gene is associated with cystic fibrosis?

A: Introduction Cystic fibrosis:- It is an inherited disorder that causes severe damage to the…

Q: What is a merodiploid, and what is genetic complementation?

A: The genome of an organism is defined as the whole heredity information encoded in the genetic…

Q: When BRCA1 is absent, is it unable to transcribe genes like p21, which leads to senescence ?

A: Introduction Senescence is defined as the stage when the cell stops dividing permanently but does…

Q: Why is Heteroplasmy rare?

A: Heteroplasmy is a condition when the organellar genome present in a cell or an individual is of…

Q: A 43-year-old (gravida 2, para 2) pregnant woman requests chorionic villus sampling (CVS) and a…

A: The correct answer is b. Klinefelter syndrome is a diagnosis for a boy with mild to moderate…

Q: What is the heterozygous advantage of people having sickle-cell trait in areas where malaria is a…

A: Introduction: Sickle cell anemia is an autosomal inherited blood disorder that affects hemoglobin…

Q: Hereditary ichthyosis in humans is a sex-linked trait.  If a normal male and a carrier female…

A: Sex-linked traits mean that the disease-causing allele is present on the "X" chromosomes. In humans,…

Q: What is the hypothesis of symmorphosis? How might youevaluate or test the hypothesis?

A: The theory of economic design is known as Symmorphosis. All the functions in organisms depends upon…

Q: What does the sex chromosome genotype XY produce in drosophilia?

A: Sex chromosomes, i.e., X and Y chromosome in an organism, determines the biological sex of an…

Q: three point cross is carried out and the following offspring recovered X Y + 150 + + + 10 + Y + 90 +…

A: The parental or non-recombinant combinations are produced more (in number) than recombinants. The…

Q: If curly hair is genetic, why do you have curly hair if none of your ancestors did?

A: The answer to your issue may lay in the manner in which hair-type genes are passed down across…

Q: Explain pseudoautosomal inheritance.

A: The study of genetic variations, heredity, and genes is called genetics. The phenomenon by which…

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…

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…

Q: How can the retinoblastoma trait be inherited in a dominant fashion if the deletion of the RB gene…

A: Retinoblastoma is an eye cancer that begins in the retina.

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.