Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 10.1, Problem 2CYL
Summary Introduction
To define:
The terms homologous chromosome, sex chromosome, and autosome.
Introduction:
The chromosomes are formed by the coiling of the DNA (deoxyribonucleic acid) molecules around the proteins. This enables the tight packaging of the DNA. The chromosomes are of two different types, namely- autosomes and the sex chromosomes.
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Chapter 10 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 10.1 - The Rainbow Connection The genetic variability or...Ch. 10.1 - Prob. 1CYLCh. 10.1 - Prob. 2CYLCh. 10.1 - Prob. 3CYLCh. 10.2 - The Rainbow Connection As Tess and Chris Giddings...Ch. 10.2 - describe the steps and outcome of meiotic cell...Ch. 10.2 - Prob. 1HYEWCh. 10.2 - What would be the consequences for the resulting...Ch. 10.2 - Prob. 2CYLCh. 10.2 - What would be the genetic consequences for the...
Ch. 10.2 - Prob. 3TCCh. 10.3 - explain how meiosis and sexual reproduction...Ch. 10.4 - compare and contrast the three main types of...Ch. 10.5 - Prob. 1CSRCh. 10.5 - Prob. 1CTCh. 10.5 - Prob. 1CYLCh. 10.5 - describe some of the human genetic disorders that...Ch. 10 - Many plants car. reproduce sexually or asexually....Ch. 10 - Meiotic cell division produces ________ (how many)...Ch. 10 - Pairs of chromosomes with almost identical genetic...Ch. 10 - Prob. 1RQCh. 10 - Prob. 2FIBCh. 10 - Prob. 2MCCh. 10 - Prob. 2RQCh. 10 - Prob. 3FIBCh. 10 - Prob. 3MCCh. 10 - Prob. 3RQCh. 10 - Prob. 4FIBCh. 10 - Prob. 4MCCh. 10 - Diagram and describe the three main types of...Ch. 10 - Prob. 5FIBCh. 10 - Prob. 5MCCh. 10 - Describe how meiosis provides for genetic...Ch. 10 - Define nondisjunction, and describe common...
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- Assume that a meiotic-nondisjunction event causes trisomy 8 in a newborn. If two of the three copies of chromosome 8 are absolutely identical, at what point during meiosis did the nondisjunction event take place?arrow_forwardVariations in Chromosome NumberAneuploidy Describe the process of nondisjunction and explain when it takes place during cell division.arrow_forwardHuman sex chromosomes are XX for females and XY for males. a. With respect to an X-linked gene, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele? c. If a female is heterozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele?arrow_forward
- Identify the type of chromosomal aberration described in each of the following cases: a. loss of a chromosome segment b. extra copies of a chromosome segment c. reversal in the order of a chromosome segment d. movement of a chromosome segment to another, nonhomologous chromosomearrow_forwardExplain the term Metaphase chromosome:arrow_forwardConsider three pairs of homologous chromosomes with centromere labeled A/a, B/B, C/c. How many kinds of meiotic products can this individual produce?arrow_forward
- Describe the folded-fiber model of the mitotic chromosome.arrow_forward"If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called a translocation." The above statement is True or False? and Explainarrow_forwardB. A woman is a carrier of a Robertsonian translocation between chromosomes 18 and 21. (i) Her chromosome set with respect to chromosomes 18 and 21 would consist of which specific chromosomes. Please draw a DIAGRAM illustrating these chromosomes as they would appear in their unreplicated state, clearly labeling the chromosomes and the chromosome arms present. (ii) If this woman were to have a child with a man who possess a completely normal set of chromosomes, there are six different possible outcomes with respect to the combinations of chromosomes 18, 21, and Robertsonian translocation chromosome that could be present in their offspring. Please indicate the TYPES and NUMBERS of chromosomes of each type present in their potential offspring. You may label the chromosomes as follows: 18 (for chromosome 18), 21 (for chromosome 21) or 18/21 (for the Robertsonian translocation chromosome). Also, please indicate the specific genetic abnormality (if any) that would be present in…arrow_forward
- crossing over within a pericentric inversion produces chromosomes that have extra copies of some genes and no copies of other genes. The fertilization of gametes containing chromosomes with duplications or deletions often result in children with syndromes characterized by developmental delay, intellectual disability, abnormal development of organ systems, and early death. Maarit Jaarola and colleagues examined individual sperm cells of a male who was heterozygous for a pericentric inversion on chromosome 8 and determined that crossing over took place within the pericentric inversion in 26% of the meiotic divisions (M. Jaarola, R. H. Martin, and T. Ashley. 1998. American Journal of Human Genetics 63:218–224). Assume that you are a genetic counselor and that a couple seeks counseling from you. Both the man and the woman are phenotypically normal, but the woman is heterozygous for a pericentric inversion on chromosome 8. The man is karyotypically normal. What is the probability that this…arrow_forwarddraw the acentric chromosome diagramarrow_forwardExplain the relationship between genetic and physical maps of a human chromosome.arrow_forward
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