Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 14, Problem 12SQ
Summary Introduction
Introduction: During sexual reproduction, meiosis is a process of cell division where chromosome number is reduced to half. Its purpose is the formation of gametes. The homologous chromosomes randomly align with their homologs at metaphase I. The chromosomes are randomly paired and segregated to opposite poles.
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Chapter 14 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 14 - Constructing a pedigree is particularly useful...Ch. 14 - Prob. 2SQCh. 14 - Prob. 3SQCh. 14 - Prob. 4SQCh. 14 - Prob. 5SQCh. 14 - A trait that is present in a male child but not in...Ch. 14 - Color blindness is a case of ______ inheritance....Ch. 14 - A female child inherits one X chromosome from her...Ch. 14 - Prob. 1DAACh. 14 - Prob. 2DAA
Ch. 14 - Prob. 3DAACh. 14 - Prob. 9SQCh. 14 - Expression of the SRY gene on the Y chromosome...Ch. 14 - Prob. 11SQCh. 14 - Prob. 12SQCh. 14 - Prob. 13SQCh. 14 - Prob. 14SQCh. 14 - Match the chromosome terms appropriately. ____...Ch. 14 - Prob. 1GPCh. 14 - Does the phenotype indicated by the red circles...Ch. 14 - Human females have two X chromosomes (XX); males...Ch. 14 - A mutated allele responsible for Marfan syndrome...Ch. 14 - The somatic cells of most individuals with Down...Ch. 14 - Mutations in the genes for clotting factor VIII...
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- Color blindness is inherited in a(n)_____ pattern. a. autosomal dominant c. X-linked dominant b. autosomal recessive d. X-linked recessivearrow_forwardA single syndrome that has more than one genetic causeexhibits ________.a. pleiotropyb. incomplete penetrancec. genetic heterogeneityd. variable expressivityarrow_forwardThe two main sources of genetic variation from meiosis are ________. a. random orientation of homologous pairs and mutation b. crossing over and random mutation c. random orientation of homologous pairs and crossing overarrow_forward
- Webbed fingers is inherited as an X-linked disease An unaffected male marries an affected female. a. Draw a Punnett square of the possible offspring. b. List the phenotypes of the possible children c. Draw a pedigree that displays the inheritance in you Punnett squarearrow_forwardAlternative forms of the same gene are called _________ . a. gametes c. alleles b. homologous d. sister chromatidsarrow_forwardWhat is it called when chromosomes fail to separate properly during meiosis? A. Nondisjunction B. Karyotype C. Chromosomal separation failure D. Inappropriate separation E. Karyokinesisarrow_forward
- The phenotype of individuals heterozygous for_____ alleles comprises both homozygous phenotypes. a. epistatic c. pleiotropic b. codominant d. hybridarrow_forwardA man who is color blind and has hemophilia and a woman who is neither color blind nor a hemophiliac have a daughter with triple X syndrome (XXX) who has hemophilia and is color blind. Where did the nondisjunction occur? Group of answer choices a. Paternal meiosis II only b. Maternal meiosis II or paternal meiosis I c. Maternal meiosis I or paternal meiosis II d. Paternal meiosis II or maternal meiosis II e. Maternal meiosis II only (b is not the right answer)arrow_forwardA test cross is performed to determine if a specific individual is a carrier. The results generate a 50/50 ratio of phenotypes. The test subject is therefore ________. A. Unable to reproduce B. Homozygous recessive C. Not following the rules of Mendelian genetics D. Homozygous dominant E. Heterozygousarrow_forward
- Here is a karyotype made from cancer cells. Which of the following abnormalities can be detected? A. Translocation B. Trisomy C. Monosomy D. All of the above.arrow_forwardThe probability of a crossover occurring between two genes on the same chromosome_____ . a. is unrelated to the distance between them b. decreases with increasing distance between them c. increases with the distance between themarrow_forwardPossible options: A. Autopolyploidy B. Allopolyploidy C. Chromosome duplication D. Pericentric inversionarrow_forward
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