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Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780133910605
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 19.1, Problem 1TC
Analysis of human chromosome 2 revealed that it contains both a functional centromere and the remnants of a second one. What does this finding suggest about the evolutionary origin of chromosome 2?
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Chapter 19 Solutions
Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 19.1 - Origin of a Killer Analysis of nucleotide...Ch. 19.1 - explain why scientific names are necessary?Ch. 19.1 - Analysis of human chromosome 2 revealed that it...Ch. 19.1 - describe the type of similarities that...Ch. 19.1 - Prob. 3CYLCh. 19.2 - Prob. 1CYLCh. 19.2 - Prob. 1TCCh. 19.2 - explain how scientists discovered that prokaryotes...Ch. 19.3 - Prob. 1CYLCh. 19.3 - Prob. 1HYEW
Ch. 19.3 - Prob. 2CYLCh. 19.4 - Prob. 1CSRCh. 19 - Applying the Concepts The pressures created by...Ch. 19 - Prob. 1FIBCh. 19 - Prob. 1MCCh. 19 - What contributions did Linnaeus and Darwin make to...Ch. 19 - Applying the Concepts 2. During major floods, only...Ch. 19 - Prob. 2FIBCh. 19 - To be informative for reconstructing the phylogeny...Ch. 19 - Prob. 2RQCh. 19 - Consider the following list of groups: (1)...Ch. 19 - In Linnaean classification, the eight major...Ch. 19 - Prob. 3MCCh. 19 - What techniques might you use to determine whether...Ch. 19 - Systematists determine the evolutionary...Ch. 19 - In modern systematics, classifications are...Ch. 19 - Only a small fraction of the total number of...Ch. 19 - Prob. 5FIBCh. 19 - Which of the following includes all the domains...Ch. 19 - In England, daddy longlegs refers to a long-legged...Ch. 19 - The number of named species is about ________, but...Ch. 19 - Why are species designations of asexually...
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- Figure 14-17 shows syntenic regions of mouse chromosome 11 and human chromosome 17. What do these syntenic regions reveal about the genome of the last common ancestor of mice and humans?arrow_forwardHumans have 46 pairs of chromosomes while chimpanzees have 48 pairs. It is proposed that the common ancestor of humans and chimpanzees had 48 chromosomes. Fusion of two ancestral chromosome led to the formation of chromosome 2 in human. Propose a mechanism for how 46 chromosomes would have been propagated in humans, considering sexual reproduction as the means of reproduction.arrow_forwardWhat are homologous chromosomes? Which are the human cells that do not have homologous chromosomes?arrow_forward
- Chimpanzees, gorillas, and orangutans all have 48 chromosomes, whereas humans have 46. Human chromosome 2 is a large, metacentric chromosome with G-banding patterns that closely match those found on two different acrocentric chromosomes of the apes. Which statement would BEST explain these findings? O Infection by a primate virus created a new chromosome when the viral DNA became a permanent part of the genome. Humans were not affected by this virus, so they did not acquire the extra chromosome. O Humans have the correct number of chromosomes. The extra chromosome pair in the other apes is a classic case of tetrasomy as a result of melotic nondisjunction in the primate ancestor. O A nonreciprocal translocation and subsequent fusion of the chromosomal fragments created a genome of 46 chromosomes without the loss of any genetic information. O Meiotic nondisjunction gave rise to a nullisomic gamete. The fusion of two nullisomic gametes produced the ancestor of the human species with 46…arrow_forwardWhat is the structure of telomeres?   short, repetitive DNA sequences found at the ends of linear eukaryotic chromosomes   long, repetitive DNA sequences found at the ends of linear eukaryotic chromosomes   short, repetitive DNA sequences found at the ends of linear prokaryotic chromosomes   long, unique DNA sequences found at the ends of linear eukaryotic chromosomesarrow_forwardWhy is chromosome 21 the smallest and not chromosome 22? considering that a karyogram is arranged from largest to smallestarrow_forward
- The chromosomes drawn below are found in a human skin cell. The lines represent the chromosomes themselves. The letters indicate the location of a particular version of a gene. d) T/F If the protein produced by the BA gene is involved in the formation of ovaries, then the BA gene is likely located on a sex chromosome. e) T/F Because the genes shown here are found in skin cells, these genes code for proteins required for skin cell function.arrow_forwardWhat type of chromosome (metacentric, submetacentric, acrocentric, or telocentric) is chromosome 1? What about chromosome 4?arrow_forwardIn a germline progenitor cell before DNA replication (2N), a translocation occurred between a telocentric and submetacentric chromosome resulting in a translocation heterozygote. The location of the translocation is illustrated below.   Draw the Prophase I pairing conformation that would result from this translocation. The four types of chromosomes you have now can be labeled as follows: T-WT (telocentric wild type), T-TL (telocentric translocation), SM-WT (submetacentric wild type), and SM-TL (submetacentric translocation). Using these labels, list (please do not draw) the possible outcomes of Anaphase I and the possible phenotypes for each outcome. Please explain your reasoning for each phenotype in a few words.  asaparrow_forward
- Describe the general organization of a eukaryotic chromosome. What structural role do scaffold associated regions (SARs) or matrix attachment regions (MARs) play? Where are genes primarily located relative to chromosome structure?arrow_forwardIt is also note that Chimpanzee has a chromosomal complement of 2N = 48, whereas human has 2N = 46. Interestingly, chromosomal banding patterns have revealed that the chromosome 12 and 13 of chimp show homology with human chromosome 2 (see figure for the alignment of human and chimp banding patterns). This is a good example of chromosomal aberration in evolution. What type of chromosomal rearrangement is likely explained the evolution of human chromosome 2 from the two chromosomes of chimpanzee? A. Translocation B. Duplication C. Inversion D. Deletionarrow_forwardThe genes that codes for the creation of certain blood groups are located on chromo- some "Xp22.3", chromosome "12p12.3", chromosome "2q14.3", and so on. What is this chromosome terminology? What does it mean?arrow_forward
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