Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 17.4, Problem 2EQ
Summary Introduction
To determine:
The results that led Morgan to conclude that eye color in fruit flies is associated with the sex of the individual.
Introduction:
Morgan's experiment explains the process of linkage and recombination. The linkage phenomenon is defined as the transfer of two closely situated or linked genes to pass on to the next generation. Higher the linkage, lesser is the recombination frequency because closely linked genes will always be inherited together.
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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
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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
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OeScience Labs, 2016
Activity 8: Sequencing Meiotic StagesLabel the stage of meiosis in each box below each diagram. Then, cut out each figure and arrange the cells so they reflect the proper order of stages of meiosis -starting with a cell in interphase and ending with the completion of meiosis. Write the letter sequence of the cells in your Lab, Activity #8.AMeiosis in animal cell
Please answer fast
What was the dependent variable, independent varible and hypothesis of the paper Cyclin: A Protein Specified by Maternal mRNA in Sea Urchin Eggs That Is Destroyed at Each Cleavage Division?
Chapter 17 Solutions
Biology
Ch. 17.1 - Prob. 1CCCh. 17.1 - Prob. 2CCCh. 17.1 - Prob. 3CCCh. 17.1 - Prob. 4CCCh. 17.1 - Mendels Laws of Inheritance Concept Check: What...Ch. 17.2 - Prob. 1CSCh. 17.2 - Prob. 2CSCh. 17.2 - Prob. 1CCCh. 17.3 - Prob. 1CCCh. 17.3 - Prob. 2CC
Ch. 17.4 - Prob. 1CCCh. 17.4 - Prob. 1EQCh. 17.4 - Prob. 2EQCh. 17.4 - Prob. 3EQCh. 17.5 - Prob. 1CSCh. 17.5 - Prob. 1CCCh. 17.6 - Prob. 1CCCh. 17 - Prob. 1TYCh. 17 - During which phase of nuclear division does the...Ch. 17 - Prob. 3TYCh. 17 - Which of Mendels laws cannot be observed in a...Ch. 17 - During a __________blank, an individual with the...Ch. 17 - Prob. 6TYCh. 17 - Prob. 7TYCh. 17 - A hypothetical flowering plant species produces...Ch. 17 - Genes located on a sex chromosome are said to be...Ch. 17 - Prob. 10TYCh. 17 - Prob. 1CQCh. 17 - A cross is made between individuals having the...Ch. 17 - Core Concept: Systems We can view life as a...Ch. 17 - Discuss the principles of the chromosome theory of...Ch. 17 - When examining a human pedigree, what patterns do...
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- VISUALIZE Sketch a series of diagrams showing each of the following, making sure to end each series with haploid cells: (a)How a pair of alleles for a single locus segregate in meiosis (b)How the alleles of two unlinked loci assort independently in meiosis (c)How the alleles of two linked loci undergo genetic recombinationarrow_forwardSomatic cells of chimpanzees contain 48 chromosomes.How many chromatids and chromosomes are present at: (a) anaphase of mitosis, (b) anaphase I ofmeiosis, (c) anaphase II of meiosis, (d) G1 priorto mitosis, (e) G2 prior to mitosis, (f) G1 prior tomeiosis I, and (g) prophase of meiosis I?How many chromatids or chromosomes are presentin: (h) an oogonial cell prior to S phase, (i) a spermatid, (j) a primary oocyte arrested prior to ovulation,(k) a secondary oocyte arrested prior to fertilization,(l) a second polar body, and (m) a chimpanzee sperm?arrow_forwardDiscuss Concepts One of the human chromosome pairs carries a gene that influences eye color. In an individual human, one chromosome of this pair has an allele of this gene that contributes to the formation of blue eyes. The other chromosome of the pair has an allele that contributes to brown eye color (other genes also influence eye color in humans). After meiosis in the cells of this individual, what fraction of the nuclei will carry the allele that contributes to blue eyes? To brown eyes?arrow_forward
- Match the following some are redundant please explain why?: Axis specification Pattern formation Genes encoding Nodal signnaling pathway members. Achondroplasia A gene which when present on th X chromosome due to a translocation cause 46, XX Differences in sex development. Organogenesis A family of genes which are found in 4 clusters of several related genes on the hiuman chromosomes . Genes which are found on the chromosomes in the same order as their expression pattern along with anterior-posterior axis in the early vertebrate embryo. HOX genes SOX9 SRY Cells moving and changing shape to form the alveoli of the developing lung Mutations in these genes can cause congenital heart defects PAX6 Establishing which cells will later become each of the different parts of the eye Establishing which cells in the early embryo will develop into the front or the back A condition caused by mutations in a gene encoding a FGF receptor Pax genesarrow_forwardMeiosis: Sequence of Stages Number the stages of meiosis from 1 to 8 to show their correct chronological sequence. [Choose] [Choose] Prophase I Prophase II Metaphase I libraries Anaphase I Telophase I Telophase II Anaphase II Metaphase II nstructional urvey 3. 4 [Choose ] [Choose ) 6 [Choose] 7. [Choose ] 8. [Choose] > >arrow_forwardAttempt all questions. la) with examples, distinguish between. Continuous and discontinuous variation. ii) Dominance and co dominance. iii) Dominant and recessive gene. iv) Chromosome and a gene. i)Centromere and chiasmata. 5 Describe what happens at the following stages of mitosis. Prophase. i) Metaphase. A tall man married á woman and all the off springs were tall. When the off prings were selfed 75%of the outcome were tall. Jsing suitable genetic symbols show; 1)The outcome of'erossing a tall man with a woman. b) The Selfing of the off springs to have 75% of the outcome tall. c) Explain why the offsprings from the marriage of the man and woman were all tall. END HAPPY HOLIDAYS Papont Colapra at conbly f as He'teele oi do tys e Speerharrow_forward
- Give typed full explanation Describe two mechanisms that explain how motor proteins associated with the kinetochore microtubules bring about the poleward movement of chromosomesarrow_forwardNeed help with question: - if a nucleus has 12 chromosomes when it begins meiosis, how may chromosomes dose it have after telophase I ? How many are there after telophase II? - which meiotic phases underlie variation? - why is it advantageous for a species to have variation with in genetic material? When is it a disadvantage?arrow_forward. A mature female wolf, with 78 diploid chromosomes in each somatic cell, produces haploid oocytes (egg cells) containing how many chromosomes per cell? 1 sex-determining chromosome (Y) and 38 autosomes 2 sex-determining chromosomes (XX) and 76 autosomes 1 sex-determining chromosome (X) and 39 autosomes 2 sex-determining chromosomes (XY) and 76 autosomes 1 sex-determining chromosome (X) and 38 autosomesarrow_forward
- Fluorescence Mapping of Blastomere in Sea Urchins Fate mapping is a technique that allows determination of the fate of cells from the three germ layers. In worms, the endoderm gives rise to the cells that line the intestines. The ectoderm gives rise to cells of the nervous system and body covering. The mesoderm gives rise to the muscles and other organs between the ectoderm and mesoderm. A researcher is tracing the fate of a particular cell (blastomere) from its position in one of the three germ layers of sea urchin blastulae by injecting a fluorescent tag in cells of the ectoderm, mesoderm, and endoderm. Several weeks later, the sea urchin embryos were analyzed for the presence of fluorescence in specific tissues. The following results were obtained. Tissue Percent increase fluorescence over background when dye is injected in the ectoderm Percent increase fluorescence over background when dye is injected in the mesoderm Percent increase fluorescence over background when dye is…arrow_forwardName Date Period # Set B Set A 話 Follow-up Questions: 1. How many chromosomes in a normal human karyotype? 46 chronmosomes. 2. How many autosomes in a normal human karyotype? 22 autosomes 3. What are gametes? Gametes are the reproductive cells in an organism, also referred to as sex cells. 4. How many sex chromosomes in a normal human karyotype? 46 chromosomes 5. What are the sex chromosomes in a male, and what are they in a female? Males have XY sex chremosomes and females have XX scx chomosomes. 6. What is trisomy? Tristomy is a conditionn that refers to the prescnce of an extra chromosome within the cell. 7. In the karyotypes you just completed, how many chromosomes did the individuals have? Patient A 41 chromosomes Patient B 47 chromosomes 8. What chromosomal disorder or syndrome, if any, did you diagnose the individuals as having? Patient A has Trisomy of 12 chromasame Patient B has an X chromesome and will have Klinefelter syndrome 9. How did the individuals obtain the extra…arrow_forwardasexual and šexual reproduction? 2. Compare and contrast gametogenesis of sperm and eggs in mammals. In your comparison, describe three similarities and three 3. Compare and contrast external versus internal fertilization. Describe at least three major differences. 4. What is meant by 'sperm competition'? What is 'second male advantage'? Describe the case study of Drosophila melanogaster in your text. 5. Describe the difference between oviparous, viviparous, and ovoviviparous. What evolutionary pressures would fauor onnarrow_forward
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