No explanation needed MULTIPLE RESPONSE: Which factors or events contribute to geneticdiversity? Select all that apply (A) *random alignment of homologous pairs during metaphase IIexchange of genetic information between chromosomes during metaphase Iseparation of chromosomes during anaphaserandom alignment of chromosomes during metaphase Iexchange of segments of sister chromatids during prophase ISubmitThis form was created inside of YCDSB G Suite. Report AbuseGoogle Forms.pdfMacBook AirDIIF5F6F7F8F42$&456.7Y* 00 234446A farmer bought semen from a farm 300 km away and the semen was1 pcshipped to him. He used the semen to fertilize one of his sows. Whatreproductive technology did he use? (K) *embryo transferartificial inseminationO in vitro fertilizationPGDreproductive cloningWhich of the following statements about trisomy is false? (K) *1 pO many trisomies are found in miscarried fetusesMacBook Air

Assisted reproductive technology (ART) is used to directly insert semen i to the body i.e.,…

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Biology

No explanation needed

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter6: Reproduction At The Cellular Level

Section: Chapter Questions

Problem 1ACQ: Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids...

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Relate histopath criteria of cancer to H nana cell cycle & chromosomal instability. Analyze the image attached and discuss how many of the mutations in cancer affect the normal regulation of the cell cycle, particularly the G2 checkpoint where mutations are supposed to be caught and not passed on. If there's a mutation in this checkpoint - notably p53 - then mutations are passed on and accumulate and we see bizarre chromosomes in cancer. Refer to original question to discuss how the histopathy criteria of cancer (unifrom population of pleimorphic cells, variable cytoplasmic nuclear ratio, multiple/bizarre nucleoli and frequent/bizarre mitotic figures) these relate to H nana cell cycle and chromosomal instability.
Objective: To review the phases of mitosis with the understanding that in a real tissue or a non-synchronized cell culture, different mitotic phases and cells in interphase will be observed at a certain time. Interphase is the period between mitotic events; all other phases are part of mitosis and their individual probabilities add up to the total probability of seeing cells undergoing mitosis. Pay attention to the individual probabilities for cells in each phase of the cell cycle. Problem N° 10 For a certain type of animal tissue, the probability of a randomly selected cell being in a particular stage of the interphase/mitosis cycle is given by the following table: Stage Probability Interphase 0.5 Prophase 0.1 Metaphase 0.05 Anaphase 0.2 Telophase 0.15 Suppose you examine 100 cells at random from this tissue. A) How many cells do you expect to see in metaphase? _____ cells B) You have selected a high magnification (2000 X) in your…
Select true or false for each of the following statements regarding anaphase II. Sister chromatids remain attached at the centromeres. Answertruefalse Homologous chromosomes remain attached at the centromeres. Answertruefalse Sister chromatids are pulled apart. Answertruefalse Homologous chromosomes are pulled apart. Answertruefalse Chiasmata are broken. Answertruefalse Non-kinetochore microtubules lengthen the cell. Answertruefalse
Indicate the stage of mitosis (interphase = I, prophase = P, metaphase = M, anaphase = A, telophase = T) during which each of the following events occur. chromatid doublets separate to individual chromosomescentriole replicatesreplicated chromosomes (chromatid doublets) are arranged in single file next to one another at the cell's equatornuclear membrane is disappearingspindle fibers form and become visiblecell plate (plant) or cleavage furrow (animal) forms and is visiblechromosomes are at opposite poles of the cell; cytokinesis is almost completedchromosomes (chromatids) first become visible as long thin strandsDNA (chromosome) replication occurs
If the M checkpoint is not cleared, what stage of mitosis will be blocked? prophase prometaphase metaphase anaphase
Discuss the levels of chromosomal organization with reference to the following terms: a. nucleotide b. DNA double helix c. histones d. nucleosomes e. chromatin
Biologists have long been interested in the effects of radiation on cells. In one experiment, researchers examined the effect of radium on mitosis of chick embryo cells growing in culture. A population of experimental cells was examined under the microscope for the number of cells in telophase (as a measure of mitosis occurring) before, during, and after exposure to radium. The results are shown in the Figure. What is the effect of radium exposure on mitosis? Source: R. G. Canti and M. Donaldson. 1926. The effect of radium on mitosis in vitro. Proceedings of the Royal Society of London, Series B, Containing Papers of a Biological Character 100:413419.
Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the initotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.
Matching Terms: A. Prophase B. Anaphase C. Telophase D. Metaphase E. Interphase _____1. The sister chromatids are moving apart. _____2. The nucleolus begins to fade from view. _____3. A new nuclear membrane is forming. _____4. The cell membrane begins to pinch in. _____5. The chromosomes de-condense. _____6. The chromosomes are located at the equator. _____7. The nuclear membrane begins to fade from view. _____8. The chromosomes move towards the poles of the cell. _____9. Sister chromatids line up along the equator. _____10. The division (cleavage) furrow appears _____11. The spindle is formed. _____12. Chromosomes are not visible. _____13. The cell plate begins to be built. _____14. Chromosomes replicated. _____15. The reverse of prophase.
Select true or false for each of the following statements regarding metaphase I. Homologous chromosomes are connected only at the centromeres. Answertruefalse Homologous chromosomes are aligned at the metaphase plate. Answertruefalse The paternal chromosomes are aligned on one side of the metaphase plate and the maternal chromosomes are aligned at the other. Answertruefalse In a cell with 4 chromosome pairs, there are 16 different ways to align the tetrads. Answertruefalse Homologous chromosomes are independently assorted. Answertruefalse
Answer as directed: Identify, define and describe each of the following terms: a. homologue b. spindle fiber c. crossing over d. interkinesis
Please help Place the images of the cell division in the right order and label them a) What is the final product of this type of cell division? Indicate the number of dauahter cells, the TYPE OF CELLS (somatic cells? sex cells? other?), where in the body this process takes place, whether they are genetically diverse pridentical, haploid or diploid, the chromosome number in human cells, whether they contain sinale- or double-stranded chromosomes, and what the "fate" of these cells is i.e. what will they go on to do, if given the chance)?