Down's syndrome occurs when either the sperm or the ovum has too many chromosomes. This usually occurs as a result of chromosomes not separating properly in meiosis. Draw what the four reproductive cells would look like if the chromosomes failed to separate in meiosis II. How many of the reproductive cells would be normal?

Q: Draw a diagram of four stages of Meiosis I in a hypothetical animal cell having six chromosomes.

A: Meiosis is the cell division process by which diploid (2n) mother cell divide it's nucleus twice and…

Q: What must happen for a secondary oocyte to complete meiosis

A:

Q: A diploid male organism has two homologous chromosomes. A and B are from its maternal parent, while…

A: Introduction Mitosis and meiosis are cell division proces. Mitosis results in cloned cells while…

Q: During what phase of meiosis do homologous chromosomes separate? O anaphase I O metaphase I…

A: Meosis has following stages :  Prophase I  Metaphase I  Anaphase I  Telophase I  Prophase II…

Q: What phase of meiosis explains the chromosome theory of inheritance and the law of segregation? O…

A: "Inheritance" is the process through which a child gets genetic information from his or her parents.…

Q: Why do the cells produced by meiosis undergo two nuclear divisions but only have a haploid number of…

A: Meiosis is a cell division that occurs at the time of the formation of gametes. It is divided into…

Q: What phase of mitotic interphase is missing from meiotic interkinesis? a. G0 phase b. G1 phase c. S…

A: The cell cycle is a process to grow and replicate its contents and finally divide into 2 identical…

Q: Briefly explain why there is no interphase in between Meiosis I and Meiosis II.

A: Interphase is a transition stage concerned with the growth and replication of DNA. Once meiosis…

Q: Why do we need to reduce our ploidy level in certain cells

A: meiosis  is the type of cell division which reduces the chromosome number by half, and it is called…

Q: A diploid cell has eight chromosomes, four per set. In the followingdiagram, in what phase of…

A: A cell can divide by one of the processes of cell division i.e. mitosis or meiosis. Mitosis is a…

Q: Meiosis I is called the division, and meiosis II is called the division. reduction; equational O…

A: Given: Cell division is the process where cell actually divides.Each and every cell divides either…

Q: During which stage of meiosis do homologous pairs of chromosomes separate from each other

A: Answer - Option D - Anaphase I

Q: Explain why the daughter cells produced by meiosis NEED to be genetically different from each other,…

A: All the events occur during cell division through which a cell divides into two daughter cells is…

Q: How many chromosomes does the original parent cells have at the end of meiosis? Are the daughter…

A: Meiosis is a type of cell division that leads to the formation of haploid gamete cells during the…

Q: What distal to them are responsible for holding the homologous chromosomes together during pro-phase…

A: Chiasmata is a point that links the two chromatids of homologous chromosomes together. At this…

Q: How many chromosomes does each of the daughter cells have at the end of meiosis. Are the daughter…

A: Cell cycle: - it is a series of changes occur in a newly divided cell through which it duplicates…

Q: Which division of meiosis (meiosis I or meiosis II) a. most resembles mitosis? b. cuts the…

A: a.Meiosis II. b. Meiosis I. TELOPHASE I.    c. Meiosis I. TELOPHASE I.  d.Meiosis I

Q: in the expermient of following chromosomal dna movement through meiosis, how many chromosomes were…

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

Q: If an organism’s somatic cell has 2n=8, what will be the chromosome number of its gametes (undergo…

A: Meiosis is a reductional process. It is responsible for producing the gametes.

Q: meiosis is often termed as a reduction division. what is reduced and when is it reduced?

A: Meiosis is the basis of the generation of new combinations from the parental type(recombination)…

Q: How does metaphase in meiosis I differ from metaphase in mitosis? In mitosis single chromosomes are…

A: Mitosis is equational division in which a diploid cell is divided into two equal diploid cells.…

Q: Explain why there are two divisions in meiosis and whythe DNA is not replicated between meiosis I…

A: Meiosis occurs to form haploid (n) sex gametes by two cell divisions (Meiosis I (4n---->2n + 2n)…

Q: An organism has 34 chromosomes in a somatic cell.  How many chromosomes will be in each cell after…

A: There are two types of cell division: Mitosis Meiosis

Q: A cell has 8 chromosomes in metaphase II of meiosis. How many chromosomes and DNA molecules will be…

A: Step 1 Meiosis is a double division which takes place in a diploid cell, involves the reduction of…

Q: If humans have 46 chromosomes in each of their body cells, determine how many chromosomes you would…

A: Introduction: Chromosomes are thread-like structures present in the nuclei of animal and plant…

Q: major events occur during meiosis

A: Meiosis is a type of cell division where four gametes or daughter cells are produced as a result…

Q: The period between meiosis I and meiosis II is called interphase II.Does DNA replication take place…

A: DNA replication is a complex process in which DNA makes an exact copy of itself. It takes place in…

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 humans have 46 chromosomes in each of their body cells, determine how many . Sperm • Egg . .…

A: Introduction: Chromosomes are thread-like structures found in animal and plant nuclei. Protein and a…

Q: Can meiosis occur in haploid cells? Why?

A: Meiosis is a type of cell division which results in the production of four daughter cells containing…

Q: Describe the events of meiosis I and meiosis II. How arethe cells produced by meiosis I different…

A: Meiosis: It is a process in which a single cell divides itself twice to form four cells. These cells…

Q: During this phase of meiosis, the nuclear membrane reappears and there is a brief resting period…

A: Meiosis is a reductional division which reduces the chromosome number to half in daughter cell from…

Q: In which meiotic division does the separation of identical chromatids occur? After the end of this…

A: Meiosis occurs in two steps known as meiosis-I and meiosis-II. Meiosis-I is the reduction division…

Q: f a nucleus has eight chromosomes when it begins meiosis, how many chromosomes does it have after…

A: Meiosis is a type of cell division. The cell is divided and produce some offspring cells. So there…

Q: If a diploid organism has 14 chromosomes (2n=14) a.  How many chromosomes will its gametes have?…

A: Introduction: Meiosis is type of cell division which  results into the  four daughter cells each…

Q: Will meiosis II still proceed if normal division doesn't occur in meiosis I? Why?

A: Meiosis I is the stage of cell cycle in which homologous chromosomes get separated and equally…

Q: At which stage of meiosis are sister chromatids separated from each other? a. prophase I b. prophase…

A: Meiosis ensures a haploid set of chromosomes at the last step of division. Mitosis and meiosis are…

Q: For which of the following is the number the same in humanmales and females?(A) interruptions in…

A: Meiosis is a type of cell division in which the parent cell divides twice into four daughter cells…

Q: There are 56 chromosomes in a mature elephant cell. If one of the elephants cells responsible for…

A: Meiosis is a process of cell division in which a single cell divides into four daughter cells such…

Q: You have added a chemical to a cell undergoing meiosis. This chemical disrupts the binding of sister…

A: During first prophase  of first meiotic division homologous chromosome pair up to form a bivalent…

Q: Which meiotic stage is represented in the image below? O Anaphase I Anaphase II Metaphase |…

A:

Q: An XXX individual may be result of an abnormal complement of chromosomes in the egg or sperm. At…

A: Introduction  Any cell contains the specific number of chromosomes and it is referred to as ploidy…

Q: What role does DNA play in meiosis?

A: Meiosis is type of cell division the other process i.e Mitosis produces two daughter cells with same…

Q: In Cell division of sex cell; why it is necessary to undergo or complete the Meiosis I and Meiosis…

A: Answer :- In cell division of sex cell it is necessary to undergo or complete the Meiosis I and…

Q: Which part of meiosis is responsible for new combinations of alleles on different types of…

A: INTRODUCTION The series of cell events that occur in a cell in preparation for cell division is…

Q: What would happen,if meiosis in humans always produced diploid gametes? Explain?

A: Meiosis is a special type of cell division occur in the germ cells of sexually reproducing…

Q: gametes (egg or sperm cells), where in the body would you expect this cell to be located?

A: Gamete production takes place for sexual reproduction.

Q: If a human gamete with a missing chromosome participates in fertilization with a gamete with a…

A: The change in the number of chromosomes is associated with multiple disorder where monosomy (lack of…

Q: Cell Undergoing Meiosis Meiosis plays an important role in gametogenesis. Which phase of Meiosis I…

A: Cell cycle are the series of events that produce daughter cells from the parent cells.

Q: A cell has 8 chromosomes in metaphase II of meiosis. How many chromosomes and DNA molecules will be…

A: Introduction  Almost all types of cells with some exceptions undergoes cell division in order to…

Embryology