What would be the result from a nondisjunction of chromosome 21 in a zygote that is 46,XY? Explain your answer

Q: What would be the amount of DNA picograms during Prophase I, Metaphase I, Anaphase I and after…

A: The amount of the DNA in a cell is generally measured in picogram unit. During the meiosis cell…

Q: Diploid somatic cells of elephants have 56 chromosomes. If nondisjunction of one of a male…

A: Meiosis is defined as the reductional division wherein the parent cell divides into 4 daughter cells…

Q: If the original parental cell had 12 pairs of homologous chromosomes, how many chromosomes would be…

A: Numerous physiological operations happen simultaneously in a biological cell. The sequential…

Q: If a human gamete with an extra chromosome participates in fertilization with a gamete with a normal…

A: A condition in which an extra copy of a chromosome is present in the cell nuclei, causing…

Q: How many chromosomes does a human normal haploid cell have? How many chromosomes does a human normal…

A: Genetic material is nothing but the sequence of nucleic acids which is called as DNA. It contains…

Q: A diploid organism is heterozygous for 4loci,how many types of gamete can be produced?

A: 'Locus' is a term which is used to denote the fixed position of a gene on the chromosome. A gene…

Q: Though an individual with abberations such as Robertsonian translocation may be phenotypically…

A: Meiosis is defined as a process where a single cell will divide twice to generate four cells that…

Q: In a cell where 2n=20, nondisjunction of two pairs of chromosomes will results into what types of…

A: * Meiosis is the process in which haploid gametes fuse and from a diploid cell.  *chromosomes do not…

Q: to produce four aughter cells. If a nondisjunction of an autosome happens during meiosis I, what are…

A: Meiosis : In this type of cell division a parent cell is divided into four genetically different…

Q: Imagine a germ cell for an animal that is 2n=4. Gene A and B are found on chromosome one, and the…

A: Meiosis is the cell division process that is responsible for the production of four haploid (n)…

Q: If nondisjunction occurs in humans for one pair of homologous chromosomes during Meiosis 1, what…

A: Humans have 23 pairs of chromosomes i.e. 46 chromosomes (diploid). After meiosis, each of the gamete…

Q: Describe one way that the events of prophase I vary from those of prophase ll during meiosis.…

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: 1. A color-blind man married a normal woman. Their daughter, who was phenotypically normal, married…

A: XC = normal X chromosome Xc =Color-blind X chromosome 1). first cross A color-blind man(XcY) X a…

Q: A heterozygous diploid yeast Aa Bb went through meiosis. What percentage of the haploid spores will…

A: Recombination is defined as the process or method by which the DNA pieces are broken down and are…

Q: Consider the following meiocyte in metaphase I. Solid black lines indicate spindle microtubules.…

A: As this is a multipart question we are instructed to answer first three parts. For the answer of…

Q: If a diploid a 40 pair of chromosomes, what is the chromosome number by the end telophase?

A: Introduction: Cell cycle is an ordered sequence of events occurring in a cell. Cell cycle results in…

Q: The incidence of Down syndrome will be high (nearly 50%) among the offspring of a parent with Down…

A: Down Syndrome is a chromosomal disorder where trisomic conditions occurs in 21th chromosom. The…

Q: A woman with no phenotype is known to have a 14:21 translocation. Please answer questions 1 and 2.…

A: Between two acrocentric chromosomes where the centromere is at one end of the…

Q: Briefly explain what 2n=12 means in terms of mitosis and meiosis.

A: Mitosis is that type of cell division in which each cell undergoes division to form 2 daughter…

Q: In Figure 4-3, would there be any meiotic products thatdid not undergo a crossover in the meiosis…

A: Meiosis is reductional divison.

Q: Please show the process of meiosis through Prophase 2

A: 1. Meiosis I:   - Prophase I: Homologous chromosomes pair up, and cross-over occurs between…

Q: Meiosis is characterized by the pairing of homologous chromosomes during prophase I. In many…

A: Introduction :- Meiosis is the reduction division through in which  gametes are formed from parent…

Q: If nondisjunction occurs in humans for one pair of sister chromatids during Meiosis 2, what…

A: In chromosome non-disjunction, the segregation of sister chromatids is prevented. It results in a…

Q: How would Shugoshin does not break down after anaphase I of meiosis affect the outcome of mitosis or…

A: Shugoshin is a protein that guides the chromosome cohesion during the process of cell division.…

Q: 1) The daughter cells that result from Meiosis 1 are already haploid and unique a) Which even of…

A: Meiosis is a process where a single cell divides twice to produce four cells containing half the…

Q: Assume that meiotic nondisjunction event causes trisomy 8 in a newborn. If two of the three copies…

A: Nondisjunction is that the failure of the chromosomes to separate, that produces daughter cells with…

Q: XAMPLE 2: The parents in the family above produce another son, this time with two Y chromosomes and…

A: The nondisjunction occurs in the father in which during the second meiotic division nondisjunction…

Q: Certain plants may have more than two copies of a chromosome. In some wild strawberries octoploid…

A: ExplasnatonPloidy is defined as the number of complete set of chromosomes. For example, an organism…

Q: Consider a cell with 2 pairs of homologous chromosomes where Chromosome 1 with genes VWXYZ is the…

A: The impact of Chromosome 1 (YZ genes) and Chromosome 3 (ST genes) reciprocal translocation on the…

Q: The letters below represent genes found on different chromosome pairs. Letters that are similar…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: A diploid organism produces four gametes from one parent cell through the process of meiosis.  Two…

A: Meiosis is made up of two cell divisions occurring in succession in sexually producing organisms and…

Q: Show the complete phases of meiosis

A:

Q: Page 1 of 1 USING TWO DIFFERENT COLORS TO SIGNIFY THE MATERNAL AND PATERNAL CHROMOSOMES, DRAW THE…

A: answer is given below Explanation:

Q: Are homologous chromosome pairs present in a diploid cell? Are they present in a haploid cell?

A: A gene is the essential physical and functional unit of heredity. They are comprised of DNA…

Q: Non-disjunction of chromosome 21 during meiosis one followed by fertilization can result in all of…

A: An zygote with nondisjunction has 3 duplicates of chromosome 21 rather than the usual two. A pair of…

Q: As two students, who will be designated Student J and Student K, were studying together, they argued…

A: New cells arise from previous cells. Parent cells undergo cell division to produce new cells. There…

Q: An autotetraploid plant has 96 chromosomes, 4N= 96. Which of the following scenarios could be…

A: 4n = 96 Univalent = 1 chromosome containing 2 chromatids Bivalent = 2 chromosomes (4 chromatids)…

Q: Why do you think that humans with trisomy chromosome 13, 18,or 21 can survive but other trisomies…

A: There are 23 pairs of chromosomes in which 22 pairs are the autosome and 1 pair is sex chromosome.…

Q: Meiotic nondisjunction is much more likely than mitotic nondisjunction.Based on this observation,…

A: Cells are the basic structural and functional unit of the organism. Cell division is the process in…

Embryology