a. What type of chromosomal abnormality does she have? b. Why doesn’t she have any symptoms? c. Would you expect any of her relatives to have particular medical problems?

Q: Why are individuals with an extra chromosome 21, that causes Down syndrome, more numerous than…

A: Extra Copy of chromosome cause different effects depend upon chromosome number . Some of the extra…

Q: In FIG. 5. at the arrow, you will see that there are genes (black) on these chromosomes. The genes…

A: The passage describes an Investigative Science activity about chromosomes and genes. It refers to…

Q: strains of Drosophila that have either normal legs or abnormally short legs and you are studying the…

A: Law of dominance says that dominant character is expressed in two conditions either  in homozygous…

Q: Raj Kumar and his wife Sunita have been blessed with a baby girl. On the other hand, Kripa Shanker…

A: Reproduction ensures the continuity of species on earth. It can occur in two ways that is sexual…

Q: Lois and Peter, who are each NOT trisomic for chromosome 21, are awaiting the birth of a 2nd child…

A: *Given that Lois and Peter are not trisomic for chromosome 21. * The probability of Down syndrome is…

Q: When recombination (“crossing over”) doesn’t happen correctly, what type(s) of mutations that can…

A: Crossing over is a process of exchange of chromosomal segments between the non-sister chromatids of…

Q: How many copies of a gene do you have... If you are a human male and the gene is on Chromosome 1?…

A: Genetics is a study of genes, heredity, and genetic variation in an organism. Living organisms…

Q: Person A has a mutation in a chromosome in a liver cell, while person B has a mutation in a…

A: Mutation refers to sudden heritable change in the phenotype of an individual. In the molecular term,…

Q: Consider the example of the fusion of chromosome 21 and 14. By itself, this fusion does not cause…

A: In humans, when the long arm of chromosome 21 is joined to the long arm of chromosomes 14 or 15, the…

Q: You are a gene hunter, trying to find the genetic basis for a rare inherited disease. Examination of…

A: It is given that the rare inherited disease is co-inherited with the markers on the chromosome 7 for…

Q: Fetuses whose cells are triploid, that is, contain three full sets of chromosomes, develop to term…

A: INTRODUCTION The DNA molecule is packed into thread-like structures called chromosomes in the…

Q: Why is random assortment of chromosomes necessary? What can we expect if this does not occur?

A: When reproductive cells mature, the Principle of Independent Assortment outlines how various genes…

Q: Why is the incidence of survivable genetic disorders involving deletions of parts of chromosomes so…

A: Deletions are the genetic aberrations or mutations in which a sequence of DNA or a segment of a…

Q: Chromosome translocations include: A. Alterations in which the genetic material remains the same…

A: There are various ways by which structures of chromosomes are altered and translocation is one of…

Q: A rare form of dwarfism that also includes hearing loss was found to run in a particular family. It…

A: The inheritance patterns explain how a disease is transmitted in families. These patterns help to…

Q: Karl and Hally Sax crossed Aegilops cylindrica (2 n = 28), a wild grass found in the Mediterranean…

A: Karl and Hally Sax conducted a cross between Aegilops cylindrical (2n = 28) and Tridcum vulgare (2n…

Q: Which of the following statements is/are true of the variegated eye color phenotype in Figure…

A: Variegated eye color is a mutant eye color that expresses both red-white mosaic color as a white…

Q: What is a molecular marker? Elaborate physical chromosome mapping with the help of molecular markers

A: Molecular mapping is used to find the location of gene on the chromosome and also the distance…

Q: Homologous chromosomes can be either monads or dyads. Explain. How is it possible to have…

A: Homologous chromosomes are paired chromosomes. In this pair one chromosome comes from mother and one…

Q: 15) A company provides genetic analysis to people who want to learn more about their ancestors. One…

A: The offsprings are produced as a result of sexual reproduction in case of human because there are…

Q: Drosophila geneticists made the first genetic maps. They claimed that the gene loci that they mapped…

A: Genetic map is the one that gives the probable location of genes on a chromosome. A genetic map is…

Q: A patient has mental deficiency, a short stature, and the mongolian type of the eyelid fold. The…

A: A pateint has mental deficiency, a short stature, and Mongolian type of the eyelid fold. The…

Q: Genes G and H are located on chromosome 18. A woman with the genotype Gg Hh has a child with a man…

A: Nondisjunction refers to the failure of homologous and sister chromatids to divide.

Q: Q1: How many male and how many female descendants (individuals that did not join the family by…

A: The traits that are present or absent in a family over generations are shown in a pedigree.I…

Q: Which of the following statements is/are true of the variegated eye color phenotype in Figure…

A: Introduction :- A phenotype is a set of observable characteristics about a person, such as height,…

Q: Review linked genes. Match the term and its description. Each term can only be used once. Genes that…

A: In genetics, there are terminologies used for the simplicity of understanding complex science, e.g…

Q: On an episode of the science fiction television program Doctor Who, the “Progenation Machine” can…

A: Independent assortment of ghromosomes ensure the production of natural recombination. As described…

Q: Fragile X is a disorder which causes mental impairment in affected individuals. The trait which is…

A: The trait in question is X linked recessive trait. This means that the trait in question is a sex…

Q: Mutation

A: A) Genetic in drosophila have provided a wealth of information about a variety of cellular and…

Q: Here are the results of the testcross: Green-eyes, wild-type wings 245 Green-eyes, miniature wings…

A: 6) The number of flies with green eyes and and miniature wings are 232, these organisms are least in…

Q: Autosomal homologous chromosomes Select one: a. are joined at the centromere b. are the same size…

A: consist of a copy of a paternal and a maternal chromosome

Q: For items 1-10, refer to the choices below: c. Pallister-Killian Syndrome DAV a. Williams Syndrome…

A: In genetics, chromosome deletion plays several roles in mutation. The gene deletion, the chromosome…

Q: The duck billed platypus is an unusual mammal. If you examine the sex chromosomes of a female…

A: The duck-billed platypus is an unusual, unique mammal, a member of the order Monotremata that is…

Q: Q1: Choose the correct answer of the following questions 1) Which can a chromosome map show? A) the…

A: Chromosome mapping is used in autosomal DNA testing which allows determining which segments of DNA…

Q: Karl and Hally Sax crossed Aegilops cylindrica (2 n = 28), a wild grass found in the Mediterranean…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: Part of the karyotype of a diploid individual who is heterozygous for one chromosomal rearrangement…

A: Chromosomal rearrangements are structural changes to chromosomes that affect how the genetic…

Q: A young man went to the doctor because he had small testes and enlarged breasts. Through chromosomal…

A: Chromosomal abnormalities occur due to the duplication or deletion of the section or whole of the…

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.