Select two that apply. Which of the following generate genetic diversity in meiosis? homologous chromosomes are separated during anaphase II homologous chromosomes align individually during metaphase II O bivalents align independently from other bivalents during metaphase I sister chromatids exchange genetic material during prophase I homologous chromosomes exchange genetic material during prophase I meiosis goes through two rounds of division

Select two that apply. Which of the following generate genetic diversity in meiosis? homologous chromosomes are separated during anaphase II homologous chromosomes align individually during metaphase II O bivalents align independently from other bivalents during metaphase I sister chromatids exchange genetic material during prophase I homologous chromosomes exchange genetic material during prophase I meiosis goes through two rounds of division

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter20: The Reproductive System

Section: Chapter Questions

Problem 11RE

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MULTIPLE CHOICE: Select the BEST ANSWER for each item by ENCIRCLING THE LETTER corresponding to the best choice. Which of the following statements is INCORRECT? The halving of chromosome number during gamete formation, followed by the union of two gametes at fertilization, allows a constant 2n number of chromosomes to be maintained from generation to generation in all individuals of a species. Meiosis ensures that all somatic cells of the developing individual have identical diploid chromosome sets. The number of chromosomes in a normal diploid cell is 2n. Gametes and other cells that carry only a single set of chromosomes are called haploid. Which of the following statements is INCORRECT? Scientists usually analyze the chromosomal makeup of a cell during metaphase because this is when the chromosomes are most visible. During metaphase, individual chromosomes have duplicated and condensed from thin threads into compact rod-like structures. Each chromosome, during metaphase,…
Rose plants are octoploid (octo = 8). Gametes from a rose plant contain 40 chromosomes. Indicate which of the following are TRUE statements. Select 3 correct answer(s) The gametes from a rose plant are diploid. The basic chromosome number of a rose plant cell is 40. The number of chromatids in a rose plant cell at G2 of the cell cycle is 160. The number of chromatids in a rose plant cell at G2 of the cell cycle is 80. The gametes from a rose plant are tetraploid. The basic chromosome number of a rose plant cell is 10. Rose plants are aneuploid.
Draw a side-by-side comparison of mitosis and meiosis. Include 6 chromosomes in your drawings at the beginning of mitosis and meiosis. Be sure to label the following in each of your drawings where appropriate: chromosomes/chromatin/sister chromatids, mitotic spindle, asters, centromeres, microtubules, centrosomes, kinetochore, and nuclear membrane.
Shown are three alignments of reciprocal translocation chromosomes in cells about to undergo meiosis. Match the daughter cells that will result after meiosis
The cat has a diploid number 2n=38, describe the alignment of chromosomes on the metaphase plate during each phase below and indicate the number of chromosome structures aligned for each phase (single or synapsed structures). In other words, determine the number of structures present at the equatorial plate during metaphase and explain each configuration (the chromosome and chromatid arrangements) composition of each chromatid and if crossing over occurs. a. Mitosis b. Meiosis I c. Meiosis II
Draw a diagram that illustrates how these chromosomes pair up during Metaphase I of Meiosis. Be sure to include all chromosomes, chromatids, genes, and centromeres in your diagram.
Fill in the blanks. The parentheses represent choices for each blank. In both mitosis and ________ (meiosis I, meiosis II) , a spindle forms and separates sister chromatids. While mitosis produces two nuclei, meiosis II produces _________ (four haploid nuclei, two haploid nuclei).
Can you guys complete this diagram for me? The instructions are “To draw the chromosomes when appropriate and separate the chromosome pairs or the chromatids at the correct stages. The two long chromosomes are a homologous pair and the two short chromosomes are a homologous pair (the thickness of the line indicates which parent the chromosomes cane from-thin for mom and thick for dad. Note that you have only one of each thickness with each homologous pair. Feel free to use a color scheme instead of thickness as you draw, but you need to keep one long and one short chromosome the same color and the second long and short chromosomes a second color so that crossing over can be visualized easily.”
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
Human cells normally have 46 chromosomes. For each of the following stages, state the number of chromosomes present in the particular cell.a) metaphase of mitosisb) metaphase I of meiosis c) telophase of mitosisd) telophase I of meiosis e) telophase II of meiosis (Remember that a pair of attached chromatids count as one chromosome.)
Picture name - Tradescantia spathacea meiotic cell. HPO (400x)Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrographs: Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge). Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph). Explain how these aberrations are formed and relate to the possible causal mutation(s). Will this result to sterile and/or fertile gametes? Explain.
A sexually reproducing organism has the following phenotype DdEeAaTt: The D and E loci are on the same arm of a metacentric chromosome in cis configuration. The A locus is on the long arm of an acrocentric chromosome and the T locus is on a telocentric chromosome. There are no other chromosomes. Using diagrams, show a cell at metaphase of mitosis and show the results of mitosis. Ensure you show the location of the gene loci on the different chromosomes.