Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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- If there are 24 chromosomes in a somatic cell in the Gap 1 of the cell cycle, what is the diploid number of chromosomes for this organism? Question 6 options: a) 48 b) 12 c) 24 d) 35arrow_forwardConsult Figure 1, which shows a human karyotype with chromosomes arranged in order of decreasing size. Would you expect this cell to have any genes characterized as hemizygous? If so, what is an example of a hemizygous gene? On which chromosome would it be located?arrow_forwardUse the following information as the basis for answering the question: A diploid eukaryotic organism has 4 unique chromosomes. Chromosome I is metacentric, chromosome II is telocentric, chromosome III is a submetacentric, and chromosome IV is acrocentric. Draw a detailed picture of BOTH of the daughter cells produced from Meiosis I of a germ cell from this organism in Metaphase of Meiosis II and label all chromosomal and cellular components. Be sure to label each chromosome (I, II, III, or IV) and include the following in your drawing: centrosomes, 3 kinds of microtubules, metaphase/equatorial plate, and plasma membrane. Use the letter p to indicate a paternal chromosome and m to indicate a maternal chromosome.arrow_forward
- Sister chromatids are 100% identical to each other unless they have undergone a recombination event with the homologous chromosome. True Falsearrow_forwardTwo nonhomologous chromosomes have the following segments, where * represents the centromere: *ABCDEFG , *RSTUVWX. Name the type of chromosomal rearrangements that would produce each of the following chromosomes. *ABABCDEFG , *ABCD , GFEDCBA*RSTUVWX , *RSWVUTX , *ABCWX , *RSTUVDEFG . Which of these types of abnormalities are most likely embryonic lethal and which ones are not usually a problem for the individual carrying them? Briefly explain why.arrow_forwardThe diploid number of chromosomes in a cell of a domestic cat is 38. The table below shows the number of chromosomes in the cell of a domestic cat after the G2 checkpoint, after meiosis, and after fertilization. After G2 Checkpoint A B с A D D B B C C 76 38 A 76 38 After Meiosis A table showing the number of chromosomes in the cell of a domestic cat. 38 19 19 38 After Fertilization Which of the following options includes the correct number of chromosomes in a cell after each cellular process (G2, checkpoint, meiosis, and fertilization, respectively)? 19 38 38 19arrow_forward
- Part of the karyotype of a diploid individual who is heterozygous for one chromosomal rearrangement is shown in the diagram. The chromosomes involved in the rearrangement, and their homologous pair, are shown. The location of each gene is labeled using horizontal lines and the name of each gene is labeled using letters or numbers. Answer the following questions about the diagram. A. What rearrangement is shown? Be as specific as possible. B. Describe a mutation scenario that could cause this rearrangement to be formed. A B D E F G H IXI A B с D E IIXDD 1 2 3 4 5 6 F G H D 1 2 34 5 6 Xarrow_forwardFrom this point on, meiosis is very similar (but not exactly similar) to what happened in mitosis. How many copies of each type of chromosome end up in the daughter cells of meiosis when it is complete?arrow_forwardWhich of the following statements about homologous chromosomes is accurate? Select all that apply. A.)They are the same as sister chromatids. B.) They are genetically identical. C.) They pair during mitosis. D.) They pair during meiosis. E.) They are genetically similar.arrow_forward
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