“In an organism that reproduces asexually, there is no difference between a somatic cell mutation and a germ line mutation.” Is this statement true? Explain.

Q: The BCRA-1 allele is associated with very high risk of breast and ovarian cancers. Is this allele…

A: The mutation accumulation (MA) theory describes that if harmful or deleterious mutations are…

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: In humans, chromosome 16 sometimes has a heavily stained area in the long arm near the centromere.…

A: Nondisjunction means failure of pair of homologus chromosome to separate or segregate either during…

Q: A family that exhibits Fragile X syndrome is shown in the pedigree. In the pedigree, squares…

A: Introduction: Fragile X syndrome has triplet repeats at the fragile site. It involves learning…

Q: Suppose there are two genes on two different chromosomes, one gene called G and the other called D.…

A: Meiosis is reduction division. In this process, 4 different haploid daughter cells are produced from…

Q: In humans, chromosome 16 sometimes has a heavily stained area near the centromere. This feature can…

A: So, non disjunction of the chromosomes occurs in the condition when the homologous chromosomes fail…

Q: According to the endosymbiosis theory, mitochondria and chloroplasts are derived from bacteria that…

A: The endosymbiotic theory tells about the origin of two eukaryotic organelles which possess the…

Q: In 1983, a sheep farmer in Oklahoma noticed in his flock a ram that possessed increased muscle mass…

A: In this problem, different results have been got depending upon the sex of the parent with callipyge…

Q: WHIM syndrome is a disease of the immunesystem resulting in warts and frequent infections.The…

A: WHIM syndrome is an autosomal dominant combined deficiency of the immune system and is caused by the…

Q: Assume a cell present in your body has performed a mismatch error during the process of DNA…

A: As you have not mentioned which question to answer, we are answering question 1 for you. Cell…

Q: Consider a hypothetical diploid genome (n=2) with two pairs of chromosomes. For each of the…

A: A cell's growth and division are accompanied by a sequence of processes known as a cell cycle. A…

Q: In rice, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the…

A: For a variety of reasons, using male sterility decreases the cost of hybrid seed production. It…

Q: Achondroplasia is a dominant trait that causes a characteristic form of dwarfism. In a survey of…

A: A mutation is a sudden heritable change and a random event. The frequency of mutation is known as…

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: Butterflies have an X-Y sex-determination system that is different from that of flies or humans.…

A: -The butterfly shown has a completely unique pattern of colors because o a special trait- it has two…

Q: Termshave a haplo-diploid sex determination system where females develop from a fertilized egg (they…

A: ANSWER;- A). The probability that a daughter will inherit a recessive allele from her mother is…

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: You receive four strains of yeast in the mail, and the accompanying instructions state that each…

A: The expression of a gene in a eukaryote depends on various factors and is regulated by different…

Q: Two yeast strains were mated. One was red with mating type A the other was red+ with mating type B.…

A: 41        red+     B     (Parental) 43        red       A     (Parental) 10        red+     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: What is the spreading phase of X-chromosome inactivation? Whydo you think it is called a spreading…

A: Heterochromatization of one X chromosome begins in the late blastocyst stage of the embryonic life.…

Q: Suppose you are analyzing the DNA from the polar bodies formed during human oogenesis. If the woman…

A: The process of the development of an oogonium into a mature ovum is termed oogenesis. It involves…

Q: The Yellow Fever vector mosquito (Aedes Aegypti) is normally 2n = 8. Please draw the following…

A: The 8- 8-chromosome mosquito Aedes aegypti is the subject of this analysis, which focuses on two…

Q: Supergenes” are groups of genes located together inside chromosomal       inversion.  Supergenes…

A: Chromosomal inversion is a type of polymorphism that is common in animals, plants and humans.…

Q: Discuss how ultra violet light works as a mutagen. This could include: What is UV light and the…

A: Electromagnetic radiation is an energy form that possesses both magnetic and electrical components.…

Q: An individual has a deletion of part of the short arm of chromosome 5.  This individual also has a…

A: A chromosome is a DNA molecule and part of genetic material.

Q: Using breeding techniques, Andrei Dyban and V. S. Baranov (Cytogenetics of Mammalian Embryonic…

A: Trisomy is the condition of the presence of three copies of one or more chromosomes in the genome.…

Q: Suppose that you are studying the role of Protein B, which you believe plays a role in regulating…

A: Apoptosis which is also known as programmed cell death, is defined as a mechanism that will allow…

Q: In eukaryotic species, sexual reproduction is the producer of genetic diversity. Describe three…

A: In eukaryotes, sexual reproduction is the process in which new recombinations are produced. These…

Q: Domesticated sheep cells have a total of 54 chromosomes (versus 46 chromosomes in human cells). (a)…

A: Chromosomes are the structures that carry DNA.

Q: Explain why a cell lineage diagram is necessary to determine if a mutation is heterochronic.

A: Cell lineage means the developmental history of progress of a tissue or any other organ of any…

Q: Consider a Droscophilia fly with a genotype of Nn XqYY

A: Drosophila is a model organism commonly known as the fruit fly.

Q: Explain why a person with Klinefelter Syndrome (XXY) still exhibits abnormal phenotypes despite the…

A: The human sex is determined at the time of fertilization in the fallopian tube of the female…

Q: Humans and many other complex organisms are diploid, possessing two sets of genes, one inherited…

A: Evolution is the process of development of an organism in such a manner that it has an advantage…

Q: An STR on chromosome 5 is very closely linked to a gene involved in a dominant metabolism disorder…

A: Gel electrophoresis is a technique that is used to separate DNA, RNA or proteins based on their…

Q: The beach mouse (Peromyscus polionotus) is a small rodent found in the southeastern United States.…

A: Introduction  An organism's genotype is made up of all of its genetic components. The alleles or…

Q: Consult Figure 1, which shows a human karyotype with chromosomes arranged in order of decreasing…

A: Eukaryotes usually have their genetic material packed and condensed into chromosomes and stored…

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.