in a mammal, how many inactivated x chromosomes would be present in individuals of XO phenotype? A) 0 B) 1 C) 2

Q: If a mother snail is heterozygous, Dd, which gene products will the egg cell receive?

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

Q: a. In which sex, XY males or XX females, would the Sxl protein bind to the msl-2 mRNA? b. As…

A: Drosophila sex determination and dosage compensation are primarily controlled by two distinct sets…

Q: In a species of rat, the map unit distance between genes A, B, C and D were as follows: (in the…

A: There are 4 genes : A , B , C , D in the species of rat. Basically ,  Map unit or m.u or cM is the…

Q: Please have define the following terms: 1.) Locus 2.) Diploid 3.) Haploid 4.) F1 Generation 5.) F2…

A: The segment of DNA that can produce a RNA is called gene. It is an inherited factor that determines…

Q: When skin cells on a female fighter's arm divide to heal a wound she got during a fight in an arena,…

A: The process of determining which X-chromosome is inactivated in the daughter cells is a random…

Q: ive one domain.motif found in the SRY portion and state clearly how it leads to the development of…

A: Since you have asked multiple questions , we will solve the first question for you. If you want any…

Q: Which type(s) of chromosomal aberrations will suppress recombination in heterozygotes?  A.)…

A: Chromosomal aberrations It is a condition that affects autosomes, sex chromosomes, or both, and is…

Q: A XY individuals transcribe the Sxl gene early but not late. B XX individuals carry the Sxl gene, XY…

A: Sex lethal genes Sxl is a gene that is involved in the exression of the X:A signal . It is a…

Q: 1. Let's take the example of the gray kangaroo (Macropus fuliginosus) whose ploidy is 8 and the…

A: In this study, we are going examine the karyotype of the grey kangaroo (Macropus fuliginosus),…

Q: Which is NOT true about Down syndrome: A) The increased risk of Down Syndrome correlates with the…

A: Genetic disorders can be outlined as the clinical conditions, which occur in the body of an…

Q: Why is an X chromosome needed for survival?

A: The sex chromosomes or allosomes are X and Y chromosomes which determine the biological sex of an…

Q: A hypothetical cell lineage is shown here. A gene, which we will call gene X, is activated in the…

A: The term heterochronic indicates the cellular and tissue level development that takes place at an…

Q: Genetic Markers are___Portions of a ___whose inheritance patterns can be followed A) unidentifiable,…

A: Genetic markers can be described as DNA sequences whose positions on chromosomes are predefined.…

Q: The orange coat color allele in cats is located on the X chromosome and is one of two genes…

A: The two variants of coat color found in cats are orange and black. The alleles responsible for these…

Q: Which of the below explains why trisomy is better tolerated in humans than monosomy? (Select all…

A: 1. <!--<SUB-PART>--> (a) <!--<SUMMARY-INTRODUCTION>--> To Determine: If the…

Q: The body cells of chickens have 78 chromosomes in their nuclei. (i) State the number of chromosomes…

A: The indirect process of cell division in which the chromosomes of parent cells divide once, but…

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: a) What is the chromosomal abnormality associated with Fragile-X Syndrome?   b) What is the…

A: Fragile X syndrome is a genetic condition which causes many problems in development.

Q: How many Barr bodies are present in the interphase cells of the ff. individuals? A) Klinefelters…

A: A Barr body is an inactivated X chromosome present in female somatic cells, named after discoverer…

Q: You've crossed two strains: (Hfr) leu+ his+ bio+ with (F-) leu-his-bio- . Interrupted mating studies…

A: In biology, genetic recombination is the process by which genetic material is exchanged between…

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: If in an offspring there is a "zigzag" segregation for the [y] mutant phenotype (recessive mutation)…

A: Zigzag segregation is a phenomenon in which genetic material is passed on in an irregular or zigzag…

Q: ow will this mutation affect the process of X inactivation? A. "X inactivation will still be random…

A: E. "The normal X chromosome (no mutation in Xist) will always be inactivated" is correct option

Q: Following primary non-disjunction, how many gametes will be nulliploid (zero copies) for the…

A: Nondisjunction occurs when the there is incomplete separation of chromosomes during meiosis. It can…

Q: In fruit flies a dominant mutation on the X chromosome causes the eye to be oval instead of round.…

A: Introduction :  Gene is a unit of heredity. It contains the genetic information. It is made up of…

Q: Shown below is a karyotype from a human being. How many total autosomes does this individual have?…

A: A chromosome is a long DNA molecule that contains part or all of an organism's genetic material.…

Q: Mutation

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

Q: 13) Use the image below of the X and Y sex chromosomes of a human to answer the following question.…

A: INTRODUCTION : Chromosomes - In the nucleus of every cell, the DNA molecule is packaged into…

Q: Aneuploidy refers to the loss or gain a chromosome part. B. Polyploid cells have extra chromosome…

A: Polyploidy is defined as the presence of more than two haploid sets of chromosomes in a species. It…

Q: A man with hemophilia, an X-linked recessive genetic disease, marries a woman who is a carrier for…

A: Hemophilia is defined as a bleeding disorder which is usually inherited in which blood does not clot…

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…

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: You are an allele on a single uncondensed chromosome in a Yellow fever-carrying mosquito (Aedes…

A: The somatic cells follow the mitotic process for division and the reproductive cells or gametes are…

Q: male has male pattern baldness, an x-linked recessive trait. Which of the following could be his…

A: The genes present on the sex chromosomes are responsible for the inheritance of a variety of traits.…

Q: We performed the following breedin color as w+ or w; brown or yellow bo the X chromosome. Answer the…

A: As stated,Red-eye color: w+ dominantwhite eye colour : w recessivebrown body colour : y+…

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: Why does a single X chromosome cause infertility and other abnormalities in Turner Syndrome…

A: Turner syndrome (TS) is a genetic disorder that mostly affects females. The clinical features of…

Q: Hemophilia in humans is due to an X-chromosome mutation. What will be the result of mating a…

A: Introduction  Hemophilia is a genetic disorder that affects the blood's ability to clot normally.…

Q: In fruit flies, eye color is an X-linked trait.  Red eyes (XB) are dominant to maroon eyes (Xb). A…

A: An alternate form of a gene is called alleles.  The dominant allele is represented by a capital…

Q: Why is X-inactivation necessary in individuals with two X chromosomes?

A: X-inactivation, also known as lyonization, is a process that occurs in female mammals (who have two…

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.