Consider the following two meiocytes in metaphase I, with crossover positions as indicated for cell A. Solid black lines indicate spindle microtubules. Assume blue chromosomes represents paternal chromosomes and green maternal chromosomes. F G A в D e a B
Q: to what do correspond respectively the grey, black and dotted lines? Indicate below the name of the…
A: Replication is the process by which the single mother strand helps to produce two daughter strands.…
Q: In the cell depicted below, chromosome #1 contains 2 genes we can track: ruhroh (which has dominant…
A: Meiosis is the cell division process by which a diploid (2n) mother cell divide its nucleus twice…
Q: An individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B •…
A: Cell division is a procedure in which a parent cell divides into two daughter cells. The cell cycles…
Q: An organism has a diploid number of 20 in a primary oocyte. a. How many tetrads are present in the…
A: Oogenesis is a kind of gametogenesis. It produces four haploid gametes (egg) from single parent…
Q: Imagine a cell that that begins meiosis with two pairs of chromosomes, one large pair and one small…
A: Meiosis is the reduction division which occurs in two phases - Meiosis I Meiosis II Meiosis I…
Q: the metaphase plate during metaphase I of meiosis, there are Select one: A. Unpaired…
A: Meiosis is a reduction division. it involves two divisions first division is the reduction division…
Q: Given a diploid number of 2N=8 and two crossing-over events, trace the fate of these chromosomes…
A: Meiosis is the process of cell division used by germ cells to produce haploid cells so they can…
Q: Crossing-over occurs in what stage of meiosis? O telophase II O telophase I O prophase I O prophase…
A: According to Bartleby guidelines, we are required to attempt first question in case of multiple…
Q: Below is a diploid cell in meiosis. a. How many 'a' alleles are present in Anaphase 1? b. How many…
A: A cell undergoes cell division to make daughter cells .For cell division it must undergo replication…
Q: A cell has four pairs of chromosomes. Assuming that crossing over does not occur, what is the…
A: Meiosis is the type of nuclear division in which haploid cells are formed from the diploid cells. It…
Q: Consider the true diploid plant cell (2n=2x=6) below wherein the light blue chromosomes A, B, C…
A: Cell division is a splitting phenomenon in which main parent cell ( here diploid plant cell )…
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: Suppose that meiosis occurs in the transient diploid stageof the cycle of a haploid organism of…
A: The synthesis phase involves the replication of DNA for distribution in the daughter cells. It is…
Q: a. Label one set of homologous chromosomes, one set of sister chromatids and one set of heterologous…
A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…
Q: Consult Figure 4, which shows the distribution of chromosome segregation for a cell with genotype…
A: Every eukaryotic cell proliferates by the means of two types of cell cycles. Mitosis, is the mode of…
Q: An organism has a diploid number of 16 in a primary oocyte. (a) How many tetrads are present in the…
A: Meiosis causes a reduction in chromosome number by half. It involves the recombination and pairing…
Q: In Figure 17-12, what would be the constitution of an individual formed from the union of a…
A: Trisomy and monosomy are two types of chromosomal abnormalities. Trisomy is when a person has an…
Q: In a cross between a white-eyed female (ww) and a red-eyed male (w+Y), nearly all the progeny were…
A: When a cross takes place between a white-eyed female (ww) and a red-eyed male (w+Y), nearly all the…
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: Consider the panels A-D in Figure 1. Which one panel illustrates the segregation of alleles on…
A: Meiosis is a reductional division. It leads to reduce the ploidy to half in daughter cell. It…
Q: h G N D t g R d Cell A Cell B
A: Chromosome no in g1 phase of meiosis =2 Chromatids =4 Each chromosome is made up of 2 chromatids.
Q: Crossing over occurs mainly during this phase of meiosis: Prophase I Prophase II…
A: All living organisms are made up of cells. Animals like humans are made up of trillion of cells.…
Q: Assume that during meiosis I none of the C chromosomes disjoin at metaphase, but they separate into…
A: Cellular division is the process of one cell splitting into many. This process is present in all of…
Q: Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the…
A: Introduction Mitosis is the division of replicated chromosomes into two new nuclei during the cell…
Q: Given: Adult diploid cell (2n = 8) 2. Show (Illustrate) the condition of the chromosomes during the…
A: Prophase 1= 8chromosome ( 1 cell) metaphase 1= 8 chromosome( 1 cell) anaphase 1=8 chromosome( 1…
Q: An initial crossover event will occur between A and B, as indicated in the corresponding image.…
A: Exchange of genetic material or chromosomal segments between non-sister chromatids happens during…
Q: Consider a hypothetical diploid genome (2N-4). The following image represents Prophase Il of Meiosis…
A: Prophase 2 of meiosis has haploid chromosome. There are found breaking of nuclear membrane in…
Q: If a parent cell has a haploid number of 8, how many sister chromatids will be present after S phase…
A:
Q: A cell that is 2n=40 undergoes meiosis, how many pairs of chromosom will each daughter cell have at…
A: Cell division is the process through which cells multiply in numbers. It undergoes both cytoplasmic…
Q: If the amount of DNA in a diploid cell during G1 phase prior to meiosis I is 8 pg, how much DNA…
A: The G phase is a period of the cell cycle in which the cell grows and prepares for DNA replication.…
Q: A woman who is homozygous for normal color vision mates with a colorblind male. they produce a…
A: Color blindness is an X-linked recessive genetic disorder. In this disease, the person has less…
Q: An organism has the chromosomes shown below. Let the period represent the centromere. LMNO.PQRST and…
A: Chromosomal aberrations (CA) are a microscopically observable portion of a broad range of polymer…
Q: Two chromosomes have the following orders for their genes:Normal: A B C centromere D E F G H…
A: In eukaryotic cells, chromosomal variations are two types such as chromosomal numerical variations…
Q: Consider a diploid organism in which the somatic cell chromosome number is 42. Assume cytokinesis to…
A: Cell division is an important process which helps to keep the cells growing in number. This enables…
Q: If the X and Y chromosomes do not segregate from each other at meiosis I (Anaphase I nondisjunction)…
A: The cell is the basic structural and functional unit of life. It carries out various functions in…
Q: ---- is any multiple of the basic haploid number, is addition of a complete haploid set Aneuploidy A…
A: The number of entire chromosomal sets present in a cell is known as Ploidy. The level of ploidy…
Q: A diploid (2n) trihybrid individual with the genotype AaBbDd can make eight genetically different…
A: Meiosis is the process of cell division, which takes place in higher organisms that reproduce by…
Q: In humans, the diploid chromosome number is 46 (2N = 46). For each of the meiotic stages listed…
A: In humans, the meiosis occurs in 2 stages. Meiosis 1 & 2. Both have 4 stages. 1. Prophase I…
Q: A human karyotype showing 22 pairs of autosomes and two X chromosomes would be O a. a normal male. O…
A: The Sex chromosome(X and Y) originates from a pair of autosomes. Nature can also be defined as our…
Q: is the same chrosome type of the parent and daughter cells after mitosis an indication that they are…
A: Cell division It is the process through which new cells are produced. It involves two different…
Q: What is the mechanism of generating aneuploiding A) Mitotic unequal segregation of…
A: Aneuploids are the individuals whose chromosome number is not a multiple of the haploid number (n).…
Q: What does each letter in the crossing over in meiosis represent? The picture below is the example of…
A: A homologous chromosome refers to a pair of chromosomes that are inherited from each parent. They…
Q: Inspect Figure 3-8: which meiotic stage is responsiblefor generating Mendel’s second law?
A: Numerous cells constitute the body of an organism. Cells forms tissues and organs. There are a total…
Q: Meiotic nondisjunction usually occurs during meiosis I. What isnot separating properly: bivalents or…
A: Meiosis is the reduction division that takes place in the germ cells or sex cells. The genetic…
Q: A M m M м M M M m m m B в в B B M M m b b b B B b b
A: The figure shows chromosomal segregation of a cell whos genotype is M/m; B/b. The depiction of the…
Q: An individual can have an abnormal number of chromosomes as a result of nondisjunction. Identify the…
A: Nondisjunction is the condition when the chromosome number is abnormal in the zygote during the…
Q: Given: Adult diploid cell (2n = 8) 2. Illustrate the condition of the chromosomes during the…
A: Meiosis It is the process of divisions in which a single cell divides two times to generate four…
Q: Refer to the drawings in the figure below of a single pair of homologous chromosomes as they might…
A: Answer of the question given below..
Q: During meiosis, in which stage does crossing over occur? Select one: a. Anaphase I O b. Prophase I…
A: BASIC INFORMATION CELL DIVISION It is necessary for all the cells In this the parent cell divides…
Q: During meiosis both recombinant and parental type chromatids are created. Which of the outcomes…
A: The meiotic division is characterized by the formation of recombinants. This phenomenon is achieved…
Step by step
Solved in 2 steps
- Consider the following two meiocytes in metaphase I, with crossover positions as indicated for cell A. Solid black lines indicate spindle microtubules. Assume blue chromosomes represents paternal chromosomes and green maternal chromosomes. G N D t d Cell A Cell B i) How many chromosomes and chromatids were present in cell A during the G1 phase? Please clearly specify chromosomes and chromatids in your answer. ii) For cell A, list all the gametes that will be produced from this cell. Give the alleles of each gamete contained within a set of brackets. You may ignore independent assortment. iii) For cell B, list all the gametes that will be produced from this cell given crossing over. Give the alleles of each gamete contained within a set of brackets. You may assume that no crossing over would take place.Consider the following two meiocytes in metaphase I, with crossover positions as indicated for cell A. Solid black lines indicate spindle microtubules. Assume blue chromosomes represents paternal chromosomes and green maternal chromosomes. i) How many chromosomes and chromatids were present in cell A during the G1 phase? Please clearly specify chromosomes and chromatids in your answer. ii) For cell A, list all the gametes that will be produced from this cell. Give the alleles of each gamete contained within a set of brackets. You may ignore independent assortment.iii) For cell B, list all the gametes that will be produced from this cell given crossing over. Give the alleles of each gamete contained within a set of brackets. You may assume that no crossing over would take place.a. Manually, using a pencil, draw a cell in anaphase II from an organism in which 2n = 2 and each chromosome is metacentric. b. Given that each G1 nucleus from this organism contains 16 picograms of DNA, how many picograms of chromosomal DNA would you expect in the cell shown here?
- a. What type of cell division mitosis, meiosis I or meiosis II is shown in this figure? b. What is the diploid number of this organism? c. Provide labels for (i) and (ii)Consider a diploid cell that contains 7 pairs of chromosomes. Each pair includes a maternal and a paternal member (for example: AP pair) or AP B ^ n * B ^ p (two pairs). How many different combinations of chromatids are possible during the early phases of anaphase in meiosis II?consider a diploid cell that contains three pairs of chromosomes designated AA, BB, and CC. Each pair contains a maternal and a paternal member (e.g., Am and Ap, etc.). Using these designations, demonstrate your understanding of mitosis and meiosis by drawing chromatid combinations as requested. Be sure to indicate when chromatids are paired as a result of replication and/or synapsis. You may wish to use a large piece of brown manila wrapping paper or a large cut-up paper bag and work with another student as you deal with these problems. Such cooperative learning may be a useful approach as you solve problems throughout the text. Draw all possible combinations of chromatids during anaphase II in meiosis.
- Complete the following table for the number of chromosomes and chromatids per cell during the different stages of meiosis II for a 2n = 6 organism. NOTE: For telophase, consider the number of chromosomes/chromatids per cell after cytokinesis. Meiosis II #chromosomes/cell Prophase II Metaphase || Anaphase II Telophase II #chromatids/cellSuppose the diagram below shows a cell during metaphase Meiosis II: microtubule a) Label the elements of the figure. b) Assuming all of the chromosomes present during Meiosis II are shown in the figure above, how many chromosomes (counting homologous pairs as two chromosomes a cell from this organism have immediately after fertilization? Tne left ShowConsider a diploid organism in which the somatic cell chromosome number is 42. Assume cytokinesis to occur in mid telophase. A. How many chromosomes at the close of telophase of mitosis? B. How many chromosomes are expected at metaphase II of meiosis?
- During metaphase I of meiosis, tetrads align along the metaphase plate independently of each other. Therefore, there is a random “shuffle” of maternal and paternal chromosomes in the resulting gametes.The following diagram demonstrates how this works in a diploid cell with four chromosomes . Because there are two pairs of chromosomes and each pair can align in one of two ways during metaphase I, the number of possible variations in the gametes produced is , or .For an organism that is , there are three pairs of chromosomes, so the number of possible variations in the gametes produced due to independent assortment in metaphase I is , or . In an organism with a haploid number of , how many possible combinations of maternal and paternal chromosomes can occur in its gametes? Select one: a. 72=49 b. 27=128 c.17=1 d. 214=16 384In a turtle species, a diploid cell in the G1 phase of the cell cycle contains 22 picograms of DNA (picogram is a measure of the total mass of the DNA present). How much DNA is present in a cell of the same species at prophase II of meiosis (prophase of the second meiotic division)?Below is my drawing of a female oocyte in anaphase I of meiosis. Use this figure to answer the following questions. A W 8 S B How many total chromatids are in this cell? R