Select all that apply. Why does meiosis result in more genetic variation than can be explained by mutation alone? because of the segregation of identical sister chromatids in anaphase of meiosis II O because of crossing over between homologs during prophase I Cross over is also called homologous recombination. because not all the DNA gets replicated during S phase because of the random alignment of maternal and paternal homologs during metaphase of meiosis I because of random fertilization.

Select all that apply. Why does meiosis result in more genetic variation than can be explained by mutation alone? because of the segregation of identical sister chromatids in anaphase of meiosis II O because of crossing over between homologs during prophase I Cross over is also called homologous recombination. because not all the DNA gets replicated during S phase because of the random alignment of maternal and paternal homologs during metaphase of meiosis I because of random fertilization.

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter8: How Cells Reproduce

Section: Chapter Questions

Problem 2.2DID

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in the experiment of following chromosomal dna mvement througgh meiosis, why. do you use non-sister chromatids to demobstrate crossing over? what combinatiobns of alleles could result from a crossover between BD and bd chromosomes? Identify two ways that meiosis contributes to genetic recombination. Why is it necessary to reduce the number of chromosomes in gametes, but not in other cell?
10:10 E ← sisAndMeiosis.docx FREE EDIT PDF FREE CONVERT PDF TO WORD 2. Why are chromosomes important? 3. How are meiosis I and meiosis II different? 1. What is the state of DNA at the end of meiosis I? What about at the end of meiosis II? 4. Why do you use non-sister chromatids to demonstrate crossing over? 7. Identify two ways that meiosis contributes to genetic recombination. 10. P FREE PDF FILLER 5. What combination of alleles could result from a crossover between BD and bd chromosomes? 8. Why is it necessary to reduce the number of chromosomes in gametes? 6. How many nuclei are present at the end of meiosis II? How many chromosomes are in each? a. Sperm Cell b. Egg Cell AP_5 c. Daughter Cell from Mitosis ON 5G I 9. Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would expect to find in the following: d. Daughter Cell from Meiosis II COUS ra PAGE 10... FREE CONVERT JPG TO PDF X OeScience Labs, 2016
Equalizing the Expression of X Chromosome Genes in Males and Females Individuals with an XXY genotype are sterile males. If one X is inactivated early in embryogenesis, the genotype of the individual effectively becomes XY. Why will this individual not develop as a normal male?
production) IN 3 DIFFERENT SPECIES, EACH WITH /TS OWN UMBER OE CHROMOSOMES * GONAD GERNM CELL DIVISION TE The drawings on the left represent stages in the two divisions of meiosis for a diploid cell in which N=2. In the other boxes in each row, draw the same stages in cells with the indicated chromosome SPECIES Y N=1 Part IV. Images SPECIES Z N=3 numbers. SPECIES X N=2 NAME the PHASE The events pictured in this row and the one below happen in both products of the first division cells * and the total number must be 2N (i.e 2 sets, one from each parent) because this can only Kappen in sexual species. Label: Homolgous chromosome Replicated chromosome Chromatid 10 Genome (think carefully for this) 2 Phases of Hhe 1stdivision of meiosis- 2 phases of the 2nd division of meiosis-
Part A Diagram A represents a chromosomal inversion event. A, B, C, D, E, F, are chromosomal loci. Represents a centromere. Diagram B shows a crossing over event between non-sister chromatids (darker vs. lighter lines) during meiosis I. A A Which of the following represents a recombinant chromosome resulting from the cross-over event shown in diagram B? E F MARK ALL THE ANSWES THAT APPLY. Inversion A E C B B EEEE
What is independent assortment during meiosis 1? POSSIBLE PC if two individuals mate, and each is capable of producing over 8 million potential gametes, the random chance of any one sperm and egg coming together is a product of these two probabilities - some 70 trillion different combinations of chromosomes in a potential offspring O a process where a single cell divides twice to produce four cells containing half the original amount of genetic information O homologous pairs of chromosomes line up in random orientations at the middle of the cell as they prepare to separate O swapping of genetic material 4. 1 2 3 4. e to search
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
Pod Shape Cross 4. Refer to the diagram to the right to answer the following question. What is the genotype of the F1 generation? P1 A. PP Inflated constricted В. Рр С. pp 111 D. P all inflated 3 inflated; 1 constricted 5. The typical human body cell contains 46 chromosomes. How many chromosomes are found in a typical human e Education TM, Inc.
An inversion heterozygote has the following inverted chromosome: Centromere ca a a A B CD JI HGF E, KL M Inverted region If a crossover occurred between genes H and I on one inverted and one normal chromosome, what would be the sequence of the dicentric chromosome before completion of metaphase I? A Cen B C D EFGHIJKL Cen M A Cen B C D JIHGFEKLM Cen JIH G F E Cen A Cen B C D JIHGFEDC B Cen A MLKEFGHIJKLM
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.
F O > a. Draw the structure of the acentromeric chromosome using a line and letters to designate loci in their appropriate order. b. Show the structure of the two chromosomes following the second meiotic division that were not involved in the recombination event. Draw these chromosomes using lines and letters to designate the loci in their proper order. m D B
Comic San.. BIUA ===|三 Normal text 12 II1 3 CP Unit 6 Review: Meiosis Page 1. What type of cell undergoes meiosis? Gamete cells Somațic cells or 2. What are homologous chromosomes? 3. For each of the following state if the cell is haploid or diploid. Sperm cell = Liver cell = Egg cell = Stomach cell = 4. If the diploid number in a liver cell is 52, how many chromosomes are there in the egg of this organism? 5. During meiosis, the chromosome number: a) is doubled becomes diploid b) is reduced c) remains the same d) 6. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 7. How many times do cells divide during meiosis? 8. What are the stages of meiosis called? Meiosis I: II lılı