In mammals, sex-chromosome aneuploids are more common than autosomal aneuploids, but, in fishes, sex-chromosome aneuploids and autosomal aneuploids are found with equal frequency. Offer a possible explanation for these differences between mammals and fishes. (Hint: Think about why sex-chromosome aneuploids are more common than autosomal aneuploids in mammals.)

Q: Campomelic dysplasia (CMD1) is a congenital humansyndrome featuring malformation of bone and…

A: Campomelic dysplasia is a rare genetic disorder characterized by bowing of the long bones and many…

Q: Albinism in animals is caused by recessive mutations inone of several autosomal genes required for…

A: Albinism and Leucism are autosomal recessive conditions; two copies of an abnormal gene will be…

Q: Phenylketonuria (PKU) is an autosomal recessive disease that results from a defect in an enzyme that…

A: With the chemical formula C 9H11NO2, phenylalanine (Phe or F) is an essential -amino acid. It can be…

Q: When a female melanotic fly is crossed with a normal male, the progeny are produced: 123 normal…

A: In the question, it is given that the in the F1 generation, the melanotic progeny is only expressed…

Q: Cinnabar eyes (cn) and reduced bristles (rd) are linked autosomal recesive characters in Drosophila…

A: According to the question, The given cross is, cn+cn+rd+rd+ (wild type female) X   cncnrdrd (reduced…

Q: ake the example of B-thalassemia, an autosomal recessive genetic disease that particularly affects…

A: A point mutation is a change in the single nucleotide pair of DNA.

Q: In McCune-Albright syndrome, fibrous connective tissue replaces bone, tan patches (café-au-lait…

A: A mutation is considered a change in the DNA sequence, which can be either an addition or deletion…

Q: Typically, most of the nucleotide variability that occurs within a geneticlocus does not affect the…

A: The total number of genetic traits present in the genetic composition of a species is known as…

Q: Phenylketonuria (PKU) is an autosomal recessive disease that results from a defect in an enzyme that…

A: PKU or Phenylketonuria is a genetic disorder related to failed metabolism of an amino acid. The…

Q: Polysaccharide Storage Myopathy (PSM) is a dominant autosomal hereditary condition in horses that…

A: Let, H and h - allele for HYPP P and p - allele for PSSM Since both HYPP and PSSM are autosomal…

Q: APOE gene has been found to be a major contributor to sporadic Alzheimer's disease (AD), by acting…

A: The APOE gene is the gene for apolipoprotein E. It is necessary to provide information about the…

Q: (a) What pattern of transmission is most consistent with this pedigree? (1) autosomal recessive, (2)…

A: Pedigree  A family tree or chart that represents a person's genetic family history by symbols and…

Q: A possible explanation for the increased incidence of Tay-Sachs disease among Ashkenazi Jews is

A: Tay Sachs is a rare autosomal recessive disorder that causes mental and physical disabilities…

Q: In the Manx tailless phenotype of cats, the tailless phenotype is caused by the mutation ML and is…

A: If the Manx tailless phenotype is caused by the mutation ML and inherited as an autosomal dominant…

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: Explore chromosomal defects among humans in Ensembl at…

A: Defects in the structure or quantity of chromosomes in a person's cells are referred to as…

Q: In Drosophila, an autosomal gene determines the shape of the hair, with B giving straight and b…

A: Drosophila melanogaster is also known as fruit flies

Q: . Human geneticists interested in the effects of abnormalities in chromosome number often…

A: The abnormal number chromosomes in the cell is called as aneuploidy. For example, instead of 46…

Q: What type of chromosomal rearrangement is likely explained the evolution of human chromosome 2 from…

A: Chromosomes  The long thread like structure chromatin condensed to form thick short structure in…

Q: During the pathoanatomic inspection of a baby-boy's dead body the following abnormalities:…

A: Chromosomal disorder are the abnormalities that arises due to alterations in chromosome arrangement…

Q: the white-eyed w+ gene from one end of the X chromosome locus (w) moves the to a location nearer to…

A: This is an example of epigenetic modification. It alters the gene expression pattern.

Q: Two related forms of muscular dystrophy—Duchenne muscular dystrophy (DMD) and Becker muscular…

A: Muscular dystrophies cause muscle weakness and atrophy in the skeletal muscles exclusively in males.…

Q: In retinoblastoma, a mutation in one allele of the RB1 tumorsuppressorgene can be inherited from the…

A: Retinoblastoma is a rare retinal disease that develops a malignant tumor in the retinal layers of…

Q: 1. Using the correct allele notation, write the genotypes for Queen Victoria and Count Chocula. 2.…

A: (Kindly note that, you have uploaded two questions together, we can only able to answer one question…

Q: Explain why inversions and reciprocal translocations do not usually cause a phenotypic effect. In a…

A: in this, no addition or removal of genetic material is done there is a relative change in the…

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: specific human individual with a male sex has the same sex chromosome complement as a metafemale…

A: Metafemale: 3 sets of X chromosomes or in other words an extra X chromosome with autosomes

Q: Pancreatic cancer is clearly inherited as an autosomal dominant trait in the family illustrated in…

A: Cancer is an uncontrolled division of cell that has a defunct apoptosis mechanism. Usually, when…

Q: Hemophilia A is caused by a sex-linked recessive gene in human and in dogs. a. What proportions…

A: Thank you for the question  Answer : Hemophilia is a genetic disorder in which a persons clotting…

Q: Colorblindness and hemophilia are both X-linked traits in humans. Explain how a female who has a…

A: Colourblindness and haemophilia are both X-linked traits in humans. Haemophilia is a bleeding…

Q: A normal appearing female infant was identified with a positive newborn screen, linked to chromosome…

A: Hereditary genetic disorders can be devastating for the family and these are screened as early as…

Q: The fruit fly Drosophila melanogaster has about 2 x 10^8 base pairs of DNA per haploid genome, of…

A: Drosophila is a fruit fly, which has genetically 4 pairs of chromosomes in its genome. It is the…

Q: three children. What is the probability that one their children will be normal (unaffected) and two…

A: Autosomal recessive mutation leads to autosomal recessive disorder. This will occur when you…

Q: In Drosophila, three autosomal genes have the following map:20 m.u. 10 m.u.a b ca. Provide the data,…

A: Gene mapping is the way in which a genetic map is designed that will use recombination frequency…

Q: 22. State how many children or percent that can be normal pigmented with dwarfism (A_D_). 23. State…

A: Autosomal inheritance means the inheritance or passing of the genetic trait from parents to…

Q: ngs vertically deranged males, ch from re stock cultures, result in a 1:1 ratio of normal females to…

A: X-linked is a trait where a gene is located on the X chromosome. Autosomal gene is located on the…

Q: II E IV 2 2 2 3 3 3 4 1 2 3 4 5 6 7 8 [Pedigree adapted from A. Freire-Maia, Journal of Heredity…

A: A pedigree is a chart that shows genetic connections among individuals. Pedigree analysis is the…

Q: Inversions are known to affect crossing-over. The following homologs have the indicated order (the…

A: Thank you for the question.  Answer : inversion is when there is disruption of a single chromosome (…

Q: The mutations called bobbed in Drosophila result from variable reductions (deletions) in the number…

A: Mutations known as bobbed results from varied deletions in the number of amplified rRNA coding…

Q: Why are people with balanced chromosomal translocations phenotypically normal? Do they suffer from…

A: Chromosomal translocations are genomic events in which either a part or the entire chromosome breaks…

Q: 6). To investigate the genetic control of locomotive behavior in the diploid nematode,…

A: Complementation test is used to determine whether the mutation in two strains are in different gene.…

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.