Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 13, Problem 9TYU
SCIENTIFIC INQUIRY The diagram in quest ion 6 represents just a few of the chromosomes of a meiotic cell in a certain person. Assume the freckles gene is located at the locus marked F, and the hair-color gene is located at the locus marked H, both on the long chromosome. The individual from whom this cell was taken has inherited different alleles for each gene ("freckles" and "black hair" from one parent, and "no freckles" and "blond hair" from the other). Predict allele combinations in the gametes resulting from this meiotic event. (It will help if you draw out the rest of meiosis and label the alleles by name.) List other possible combinations of these alleles in this individual’s gametes.
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SCIENTIFIC INQUIRY The diagram in question 6 represents just a few of the chromosomes of a meiotic cell in a certain person. Assume that the freckles gene is located at the locus marked F, and the hair-color gene is located at the locus marked H, both on the long chromosome. The individual from whom this cell was taken has inherited different alleles for each gene (“freckles” and “black hair” from one parent, and “no freckles” and “blond hair” from the other). Predict allele combinations in the gametes resulting from this meiotic event. (It will help if you draw out the rest of meiosis and label the alleles by name.) List other possible combinations of these alleles in this individual’s gametes.
Question is also in the picture.
Sketch a comparison of Metaphase Mitosis and Metaphase I Meiosis (diploid:8 chromosomes n=4)
- Be sure to number the chromosomes and use a “P” for paternal and “M” for maternal.
The drawings below represent four possible cells produce by meiosis in a cell pf the genotype AaBb. Examine the figures below and answer the questions that follow:
1. How many different types of cells are produced at the end of Meiosis I? A *Write your answer as a word, not a number
2. Is there any other way you could have arranged the chromosomes? For example,
a. Could A and a be arranged so that both go to the same cell after Metaphase I (Yes/No)? B
b. Could B and b be arranged so that both go to the same cell after Metaphase I (Yes.No)? C
c. Could A and B be arranged so that both go to the same cell after Metaphase I (Yes/No)? D
d. Could A and b be arranged so that both go to the same cell after Metaphase I?(Yes./No) E
3. Are the daughter cells haploid, or diploid? F
4. Do the daughter cells have the same genetic composition as the original cell (Yes/No)? G
5. Focus on the four daughter cells…
Chapter 13 Solutions
Campbell Biology: Custom Edition
Ch. 13.1 - MAKE CONNECTIONS Using what you know of gene...Ch. 13.1 - How does an asexually reproducing eukaryotic...Ch. 13.1 - WHATIF? A horticulturalist breeds orchids, trying...Ch. 13.2 - MAKE CONNECTIONS In Figure 13.4. how many DNA...Ch. 13.2 - VISUAL SKILLS In The karyotype shown in Figuro...Ch. 13.2 - WHAT IF? A certain eukaryote lives as a...Ch. 13.3 - MAKE CONNECTIONS Comparc tho chromosomes in a...Ch. 13.3 - WHAT IF? After the synaptonemal complex...Ch. 13.4 - What is the original source of Variation among the...Ch. 13.4 - The diploid number for fruit flies is 8, and the...
Ch. 13.4 - Prob. 3CCCh. 13 - Explain why human offifuing resemble their parents...Ch. 13 - Compare the life cycles of animals and plants,...Ch. 13 - Prob. 13.3CRCh. 13 - Prob. 13.4CRCh. 13 - A human cell containing 22 autosomes.and a Y...Ch. 13 - The two homologs of a pair move toward opposite...Ch. 13 - Meiosis II is similar to mitosis in that (A)...Ch. 13 - Prob. 4TYUCh. 13 - If we continue to follow the cell lineage from...Ch. 13 - DRAW IT The diagram shows a cell in meiosis. (a)...Ch. 13 - Explain how you can tell that the cell in question...Ch. 13 - EVOLUTION CONNECTION Many species can reproduce...Ch. 13 - SCIENTIFIC INQUIRY The diagram in quest ion 6...Ch. 13 - Prob. 10TYUCh. 13 - SYNTHESIZE YOUR KNOWLEDGE For selected answers,...
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- Meiosis Explains Mendels Results: Genes Are on Chromosomes The following diagram shows a hypothetical diploid cell. The recessive allele for albinism is represented by a, and d represents the recessive allele for deafness. The normal alleles for these conditions are represented by A and D, respectively. a. According to the principle of segregation, what is segregating in this cell? b. According to Mendels principle of independent assortment, what is independently assorting in this cell? c. How many chromatids are in this cell? d. Write the genotype of the individual from whom this cell was taken. e. What is the phenotype of this individual? f. What stage of cell division is represented by this cell (prophase, metaphase, anaphase, or telophase of meiosis I, meiosis II, or mitosis)? g. After meiosis is complete, how many chromatids and chromosomes will be present in one of the four progeny cells?arrow_forwardMeiosis Explains Mendels Results: Genes Are on Chromosomes Discuss the pertinent features of meiosis that provide a physical correlate to Mendels abstract genetic laws of random segregation and independent assortment.arrow_forwardThe chromosome constitution number of this individual is 2=6. This drawing represents: a. mitotic metaphase. b. meiotic metaphase I. c. meiotic metaphase II. d. a gamete. e. sixnonhomologous chromosomes.arrow_forward
- SCIENTIFIC INQUIRY The diagram in question 6 representsjust a few of the chromosomes of a meiotic cell in a certainperson. Assume the freckles gene is located at the locus markedF, and the hair-color gene is located at the locus marked H,both on the long chromosome. The individual from whomthis cell was taken has inherited different alleles for each gene(“freckles” and “black hair” from one parent, and “no freckles”and “blond hair” from the other). Predict allele combinationsin the gametes resulting from this meiotic event. (It will helpif you draw out the rest of meiosis and label the alleles byname.) List other possible combinations of these alleles in thisindividual’s gametes.arrow_forwardIn Human Cell at Difference Stages of MeloSIS Identify the number of chromosomes in a typical human GERM cell during each stage of meiosis. For each stage, choose either 23 or 46 chromosomes. Prophase I [Choose ] [Choose ] 23 Metaphase I 46 Anaphase I [ Choose ] Telophase I [ Choose ] Prophase II Choose ] Metaphase I [Choose] Anaphase II. [Choose ] Telophase II (Choose)arrow_forwarduse the image to answer these two questions - draw all possible metaphase I arrangements that would occur if this cell were undergoing meiosis. be sure to label the alleles as shown above -draw all possible gametes that will result from this cell undergoing meiosis. again, be sure to label the alleles (there should be EIGHT total possbilities, please draw ALL of them)arrow_forward
- a. What phase of Meiosis II is the cell in? How do you know? b. Assuming all of the chromosomes present during Meiosis II are shown in the figure above, how many chromosomes (counting homologous pairs as two chromosomes) does a gamete from this organism have? c. Draw the same cell during the same phase of Meiosis I. Label the elements.arrow_forwardWhich of the following shows differences between chromosome in a cell at metaphase of mitosis with those in a cell at metaphase Il of meiosis? * I The chromosomes in metaphase of mitosis can be diploid but the chromosomes in metaphase II of meiosis always consist of a haploid set. In metaphase of mitosis, sister chromatids of each chromosome are genetically identical but in metaphase II of meiosis sister chromatids are not genetically identical. II III Individual chromosomes line up at the metaphase plate during metaphase of mitosis, but pairs of homologous chromosomes line up at metaphase plate during metaphase II of meiosis. O I and II only O I and II only Il and III only O I, Il and IIIarrow_forwardDuring zygotene stage of meiosis I, a remarkable pairing of chromosomes occurs. Look at the bottom part of As shown in which “mitosis: growth of the body” has produced cells with four different types of chromosomes. The black ones came from the sperm nucleus. The red ones came from the egg nucleus. If one of these nuclei were to undergo meiosis, which chromosomeswould pair during zygotene (which are homologous)— the long black one with the short black one or the long black one with the long red one?arrow_forward
- Germ cells are specialized cells that develop into gametes. Gametes are produced through the process of meiosis. If the haploid number for monkeys is 27 chromosomes, how many chromosomes does a cell undergoing division have at each of the following phases? Select the row that correctly shows the number of chromosomes at each phase. Select one: a. G2 of Interphase Mitotic Metaphase Meiotic Metaphase I Meiotic Metaphase II 27 54 54 27 b. G2 of Interphase Mitotic Metaphase Meiotic Metaphase I Meiotic Metaphase II 54 27 27 27 c. G2 of Interphase Mitotic Metaphase Meiotic Metaphase I Meiotic Metaphase II 54 54 27 27 d. G2 of Interphase Mitotic Metaphase Meiotic Metaphase I Meiotic Metaphase II 54 54 54 27arrow_forwardAll of the following are distinctions between the process of mitosis and meiosis EXCEPT: Group of answer choices homologous chromosomes in meiotic cells conduct synapsis meiotic cells produce genetically distinctive cells meiotic cells go through two cell divisions meiotic cells have homologous chromosomes where mitotic cells do not 2. A scientist working in an IVF (in vitro fertilization) clinic mistakenly produced a human zygote with 45 chromosomes. What biological process could explain how this happened? Group of answer choices failure of an egg to complete meiosis II failure of the egg nucleus to be fertilized by the sperm a non-disjunction in meiotic anaphase occurring in either an egg or sperm incomplete cytokinesis during spermatogenesis after meiosis Iarrow_forwardDistinguishing Meiosis I from Meiosis I| How do you know what is meiosis I and what is meiosis II? Here are some hints to help you determine how to identify if a cell is undergoing meiosis I or meiosis II. • In prophase l and metaphase I, the chromosomes are found in their homologous pairs. In prophase Il and metaphase ll, there are single duplicated chromosomes. • In anaphase l and telophase I, the chromosomes are duplicated (shaped like Xs). In anaphase ll and telophase II, the chromosomes are not duplicated. Take a look at the picture, and then answer the questions How many chromosomes will be in the gamete produced when this cell has finished meiosis? O 1 О 4 O 2 O 3 O 6arrow_forward
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